Econo-Can: A $55 Suppressor

Posted April 24, 2012 in NFA / Suppressors / Class III, Rifles by Steve Johnson with 112 Comments
Tags: 22, rifles, suppresor, Suppressors

American Specialty Ammo is selling a registered NFA suppressor for $55 (+ $200 tax stamp) that is nothing more than an adapter to attach a car oil filter to a 1/2-28 threaded barrel. The first bullet punches a hole in the end of the oil filter.

The price is now $55, not $75 as stated in the video.

You can buy “spin-on” oil filters for $10 – $20. A used oil filter (soaked with old oil) will only improve its efficiency. Internally oil filters contain fibrous material designed to filter out contaminates from the oil. I think they would eventually wear/burn out when used with firearms.

An oil filter cartridge

This is a very clever concept. It makes me wonder why someone doesn’t make a universal suppressor adapter and a range of tubes for various calibers.

Personally, I would rather buy a well-made suppressor rather than risking a oil filter exploding in my face.

[ Many thanks to jdun1911 for emailing me the link. ]

Steve Johnson

Founder and Dictator-In-Chief of TFB. A passionate gun owner, a shooting enthusiast and totally tacti-uncool. Favorite first date location: any gun range. Steve can be contacted here.

More In: NFA / Suppressors / Class III, Rifles

Tom

The inexpensive oil filters do a better job at silencing than the high dollar suppressiors on the 22 RF.. I would like to see this demo with a bolt action rifle so we wouldn’t hear the action noise.
- Steve
  
  That, and it would be nice to footage that proves they are using similar ammo. A subsonic to supersonic round comparison would make big difference.
  
  I like the idea, but aiming around that can would be ridiculous.
  - Woodroez
    
    It sounded to me like some of those shots with the 10/22 went supersonic.
Dave H

Something about “oil-soaked fibrous material” and “muzzle flash” just don’t sound like they should go together.
Ben H

Now how long until the ATF hits everyone who has a few oil filters in their garage with some B.S. “intent” charges?
- http://www.thefirearmblog.com/blog/ Steve (The Firearm Blog)
  
  It’s a good thing they don’t know about car mufflers either.
http://www.XaqFixx.com Xaq Fixx

“Personally, I would rather buy a well-made suppressor rather than risking a oil filter exploding in my face.” – I would love the ~$800 that a purpose built suppressor costs. Something like this, which is cheap, works well, and can be replaced for $5 instead of repacked oil mailed in for cleaning like some .22 filters. With this I can have similar performance, easier maintenance, and an additional $740 in my pocket.

I cannot image the scenario that would lead to this exploding, but I wouldn’t run it with a used filter.
Woodroez

This had popped up on my YouTube account’s recommended vids list a few days ago. Super neat concept.

My initial reaction was that, nowadays, you can get quality cans for .22lr at sub-300 dollar levels and have something that probably functions as well with a much more manageable size, and that, frankly, looks better.

Seeing that fellow run it on that custom AK-74 really makes that light bulb in your head go off, though. The value proposition is way, way higher if you have multiple weapons of various calibers you can use it with.

You’re probably right, Steve, about a used filter being a bit more effective. I would also try it with a new filter and water or a new filter with water and some coagulating substance, like corn starch or flour.
David/Sharpie

Hmm…..I’ve actually been thinking of filter suppressors for a few days, perfect timing.

I bet you could just have an adapter made or you could make it yourself if you had the skill.

Too bad I couldn’t get that in Canada, but I do know some machinists….=)
- Steve
  
  You can get solvent traps shipped to Canada.
  - David/Sharpie
    
    Thank you for this information, I do have a couple filters lying around and I do need to change my oil soon…..but really officer, I will “only” use it as a solvent trap.
Ben

This is a political statement as much as anything honestly. The reason you don’t see a “universal silencer” and then extra thread on attachments is the ATF quickly slaps the manufacturer upside the head if they try. Heck they label silencer parts as “a silencer” so if your can uses 4 baffles and you have 5, and the extra one is laying around then you have an unregistered silencer even though that single baffle is totally useless as a silencer by itself.

This setup on the other hand is pretty difficult for them to do much about (unless they go after the guys making the adapter, and they might). This design proves how stupid most of these regulations are and hopefully get some attention on the idea of removing suppressors from the NFA permanently.

You know its a problem when paintball makers / players worry about making a silencer for their paintball marker because the ATF has posted warnings that a paintball silencer “might” get them stuffed in federal prison.

When did it no longer become important that laws made any sense? We really need more Jury nullification. More people need to know that the law isn’t binding to the jury and if the people believe its foolish and wrong then we can simply say “no” and remove it through jury nullification.

Please people. Read and understand the idea behind jury nullification and dont tell them you know anything about it if your selected as a juror. http://www.foxnews.com/story/0,2933,163877,00.html
- Mike
  
  I was heavy into paintball when BATFE came down hard on the silencers built for paintball guns about 15 years ago. Ridiculous, since we were making them out of plastic and foam…
- jdun1911
  
  There are muzzle attachment that acts like the first baffle and these attachment are not label by the ATF as suppressor. For example: KAC Triple tap.
  
  I agree that they need to at the very least remove suppressor form the NFA.
Bryan S.

Correction.. no matter what, much like the price of gas, the tax is part of the price. This is a $255+ suppressor.

Until we can get the government out of our hearing protection, it will be out of the price range of those of us who do not have the extra money to go ask “mother may I”.
Bryan S.

Also… does anyone make an offset oil filter?
http://www.sygnow.com Stand Your Ground

Wow very useful for that bird who keeps waking me up at 4:30am
- Other Steve
  
  And how would you aim to hit it?
  
  This is redneck engineering at best.
  - David/Sharpie
    
    Snap shooting? Or use a high-mounted sight?
  - Komrad
    
    High mounted optics. A little 1.5x or 2x scope mounted nice and high would be very useful both for rifles and pistols. Either that, or a red dot.
Raoul O’Shaugnessy

If the oil filter manufactuers make any radical design changes (wall thickness, etc,etc.) in their filters someone is gonna be in for a nasty shock.
- Mike
  
  Just don’t use an off-brand (or even some major brand – Fram, I’m looking at your low-quality ass) filter and you’ll be fine.
  
  Saying this as a master auto tech…
  - jdun1911
    
    I got to ask, are there any oil filter that shape like a suppressor that use standard oil filter threads?
Pop N Fresh

the mystic suppressor, http://www.libertycans.net/mystic.html, says it’s rated for full auto 9mm but good for 556/22lr/300blk. interesting…….
Hryan

Interesting concept, but essentially destroys any chance of using the sights.
Griff

ASA is close to me in ohio I haven’t checked out their shop, maybe i should now.
- SPC Fish
  
  i have seen and talked to chris many times at gun shows and bought a few things off of him. but i havent been to his shop yet. he started out just selling at shows. he has a lot of cool stuff that annoys the neighbors
Anon

Err, how the hell did Tech Branch approve this?

For years now ATF has consistently ruled that any portion of a suppressor = a suppressor. Selling a tube? It’s a suppressor. Selling an endcap? It’s a suppressor. Selling baffles? It’s a suppressor.

So how do they get around the obvious legal necessity of adding another part onto the adapter which clearly functions as baffle, muzzle cap, and tube? From a legal perspective you’ve just suddenly converted your oil filter into an unregistered NFA item by screwing it on or off. Hell, you could be charged with constructive possession of unregistered suppressor components just by having it in the same household as your car, if it came right down to it.

Either someone in Tech Branch was asleep when they signed off on that, or they never received an approval letter, or ATF has just simply elected to stop enforcing certain provisions of the NFA now…
- Burst
  
  Without knowing for certain, I’d guess someone had a brainwave and looked at the sales figures for oil filters.
  
  That’d be a whole lot of investigation, most of which would be completely without merit. It’s apparently not a gun part until it can be attached to one.
  
  Oil filter alone ≠ suppressor. Oil filter + Adapter= suppressor.
- kirk
  
  An AR-15 receiver is a “firearm”. You can buy any other part without issue, you only need a background check for the receiver. You can buy as many uppers, stocks, and triggers as you want, even if you don’t own a receiver. This seems about the same to me…. An oil filer on its own inst a suppressor, just like an AR-15 upper on its own isn’t a firearm. Neither can do a thing untill you attach it to the registered part….
Giolli Joker

It seems the original idea was pretty different, then they tried shooting thru the oil filter: http://www.cadizgunworks.com/zcstore/
I wonder if you can still buy the device as a “solvent trap”…
- David/Sharpie
  
  I doubt it……
  
  I think they’d notice that everyone was buying the solvent trap and not the adapter.
  
  I wonder if the people who bought the “solvent trap” will now have to register it as a suppressor?
- Cymond
  
  I think they do …
  
  I mean, it seems unlikely that they’d leave a discontinued product on the front page of their webstore.
  - David/Sharpie
    
    True, although maybe they just haven’t gotten around to updating it yet.
    
    But I bet its that they can still sell the solvent trap, but if caught using it as a suppressor…
    
    “You wanna be the mommy or the daddy”
    “Daddy”
    “Okay, come over here and s**k mommys d**k”
    
    So don’t do it..
- beans
  
  They do sell them as solvent traps… I just saw them at the gun show in Pittsburgh today for 30 bux…
Greg

This isn’t necessarily a new concept – People have told success stories on SilencerTalk and Arfcom of registering adapters like these that allow for attachment of oil cans or even plastic soda bottles to be used as suppressors.

To address what previous posts have questioned, the main reason ATF is okay with these is that they view the oil cans/soda bottles as suppressor wipes as opposed to suppressor parts. Lots of older suppressors (and some new ones, Thompson Machine to name one brand) use[d] wipes to help suppress the sound beyond the baffle chambers. Wipes are not currently seen as a suppressor part by the ATF, and you can replace them when they’re shot out.
- jdun1911
  
  So if I change my oil filter thread to 1/2 x 28 I do not need to NFA my it?
  - David/Sharpie
    
    They couldn’t stop you from doing it but if they caught you using your firearm or in your home with it mounted you’d probably go to jail for having an unregistered suppressor
Rusty Ray

Wasn’t this seen in ‘No Country For Old Men’, but on a shotgun?? Cheers.
West

If you have a large diameter can that blocks the metal sights it might help to draw a straight white line down the top of the can as a crude sight system.
Better than nothing.
- David/Sharpie
  
  I don’t think that would work, for side-side adjustments maybe but what about up-down aiming? Also I don’t think the can would thread on exactly the same everytime
  - West
    
    Well, I figured you would probably use one filter per shooting session so you wouldnt need to worry about taking it on and off. How many shots is one filter good for?
    And does the tax stamp cover the adapter so you can go through as many filters as you want or does it cover the adapter/filter combo??
    
    Youre right, its only going to help uou line up laterally but that might be worth it to take a minute and draw a line down the top of it.
  - David/Sharpie
    
    I’m sure more than a usual range session. From what I can tell the tax stamp covers the adapter, I’m not 100% sure on the laws but I believe the filter is considered a “suppressor part” and isn’t subject to a tax stamp, while the adapter is considered the suppressor.
    
    Eh, I still think either higher sights/optic would be easier and better than drawing a line, most new guns either come with or can be fitted with higher sights/rails for a raised optic
  - West
    
    Personally, im surprised the gub’mint allows this at all.
  - Cymond
    
    “but I believe the filter is considered a “suppressor part” and isn’t subject to a tax stamp, while the adapter is considered the suppressor.”
    
    The ATF considers suppressor parts to BE suppressors. Supposedly people started selling unassembled suppressor ‘repair kits’ and now the ATF considers a single piece to be an unregistered suppressor.
    
    Heck, you can’t even replace the gas absorbing padding in an older style registered suppressor. http://www.wnd.com/2011/11/368769/ – and if steel wool can be considered spare unregistered suppressor parts, then ditto on spare oil filters.
  - David/Sharpie
    
    Ahh, but what if you needed replacement wipes for one? Would you just have to throw it out and buy a new one or is there a section in the laws that you can “unregister” the old parts?
  - Cymond
    
    Apparently wipes are the only replaceable part. Not tubes, end caps, baffles, or packing material. I wouldn’t quite call an entire oil canister a ‘wipe’, it’s closer to a baffle stack IMHO.
    
    Technically, a person can legally replace the packing but it requires a Form 1 and $200 tax. However, a manufacturer/SOT can replace the internals of a suppressor without jumping through those hoops.
- jdun1911
  
  There are different size oil filters. There might be some that won’t block the sight.
  - West
    
    Yeah, I wonder how well a smaller motorcycle filter would work on a handgun..? You would need a smaller adapter.
HK93

Does this come with the shoe lace machine gun converter ?
El Duderino

I wonder what’s next from Bubba, Inc.
jdun1911

I’ll be honest I do not see why this item is NFA. All it is is a thread adaptor. If you want to just thread your barrel to accept oil filter threads. Will that make my barrel NFA just by changing the threads?

Why aren’t other suppressor adaptor not label NFA like KAC triple tap, YHM, and, AAC muzzle devices.
- David/Sharpie
  
  The ones you listed are muzzle devices, you still need a registered suppressor using those, they can’t really register oil filters can they..
  - David/Sharpie
    
    I’m sure the ATF would feel left out if they couldn’t register SOMETHING
  - jdun1911
    
    And the this is not? Some of those “muzzle devices” are design to be the first baffle in a suppressor. All the Econo-Can is a thread adapter.
    
    Again if I threaded my barrel to accept oil filter would that make my barrel NFA?
  - David/Sharpie
    
    No, what would it do on a muzzle without the can?
    
    Probably not, but if you were caught using a filter on you’d go to jail for having an NFA item that wasn’t registered
  - jdun1911
    
    Apparently this is a done deal by the ATF and if stand it will open a large can of worms. Good and bad.
    
    The inventor can take it to the next level by selling the NFA adapter at cost or below. Than make his own “oil filter” can that doesn’t need NFA approval. Sell the improve “oil filter” can for $150 each with free shipping to your home. Personally if I were him I’ll do it. Use the razor blade businesses model that have proven to make a lot of money.
    
    The bad news is potentially every muzzle devices can be classified as NFA.
    
    I’m actually thinking about using the razor blade businesses model on suppressors.
- Cymond
  
  The Cadiz Gun Works (maker of the Econo-Can) also sells an identical product on the front page of their website as “Solvent Trap for the AR 15 / M-16″. No price is listed. The similarity has already been discussed over at Carolina Shooters. Possession and cleaning-use would be legal but using is as a suppressor would be illegal. Seems strange? Well it’s perfectly legal to drink soda and shoot rifles, but it’s a felony the instant someone slips the bottle over the barrel.
  
  http://www.carolinashootersclub.com/threads/6086-Econo-can
  - David/Sharpie
    
    I said this a guy below.
    
    “I think they’d notice that everyone was buying the solvent trap and not the adapter.
    
    I wonder if the people who bought the “solvent trap” will now have to register it as a suppressor?”
    
    What are the chances of them finding you using it? But you still shouldn’t break the law.
    
    There’s a “solvent trap” here in Canada that clamps a water bottle over your gun…..hmm, I wonder….
  - Cymond
    
    Well, it appears that they’re still selling the solvent trapper. I imagine there’s no need to register the solvent traps unless the owners intend to use them as suppressors. I’ve seen a water-bottle holder for a similar purpose, yet the ATF has long held that it’s a crime to attempt to make a suppressor out of a water bottle. Shoe strings and steel wool are legal until applied in a restricted manner. I suppose the same applies to the solvent trap. These items are gray-area until a use/intent is applied.
  - David/Sharpie
    
    Gray areas and loopholes suck…
    
    Except when it means I can use a 10 rnd mag in an AR-15 (I’m Canadian, the 10 rnd mags are “pistol” mags, so they don’t have to only hold 5)
    
    Or belt fed, that’s a loophole too
- Matt G.
  
  No. Changing the thread on your barrel will not make it NFA unless it becomes shortened to less than 16″ in the process.
  
  The suppressor is the restricted item, not the barrel. The reason that things like the “triple tap” and other supressor attachment devices are not restricted is because they have other uses besides suppression and because they can’t suppress without a registered supressor.
  
  I would never buy one of these. Not only is an oil filter heavy and ungainly, but all it takes is one stupid, ATF, peice of shit, asshole to decide he doesn’t like it, and it’s all of a sudden it’s illegal.
  - Charles P
    
    as long as you buy it while its legal theres nothing they can do.
David/Sharpie

Does anyone know the thread on most oil filters
- jdun1911
  
  13/16″-16 common oil filter threads
  
  1½”-16 not so common oil filter threads
  
  1/2×28 AR15 threads
  - David / Sharpie
    
    Sweet, thanks man.
    
    I only ask because after the zombie apocalypse (…………………….) I may try and make one….you know….for the stealth kills…
  - jdun1911
    
    Just make sure you hide your dog/pets.
    
    I think there is a market for cop proof body armor for pets.
  - David/Sharpie
    
    Come again?
  - ThomasD
    
    Because having the appropriate die cutters is not (yet) a crime.
  - David / Sharpie
    
    Was that supposed to answer the pet comment?
wry762

So no one here has ever tried point shooting? Or ever practiced the Speed Rock draw until you could consistently hit a paper plate at, oh, say… 10′?

There are vids on YouTube of people consistently hitting steel gongs with handguns at 50+ yards. Decent handgun + quality ammo or reloads + (practice X 10) = impressive performance. If someone can score hits at 50 yards using the sights, is it unreasonable to believe that someone can score hits at a small fraction of that range without using the sights?

Not all firearms/accessories are designed for Camp Perry – I see this as more across-the-room, or maybe across-the-street. And as some have pointed out, it might be fun!
John Doe

The ATF just isn’t complete unless they f*** with any new firearms-related product.
- David / Sharpie
  
  Reminds me of the RCMP
tincan

Somewhere out there, a smart auto parts company is going to make oil filters with an integrated picatinny rail…
http://round2reloaders.com RANDY

this is no revelation or big news. this has been known about by myself and others for well over 20 years. i think the first time i saw it was in a little known publication called S.O.F. it works in a pinch, well at that too.
http://round2reloaders.com RANDY

no big news, known about for many years. works well but for a pinch only. a 20 oz plastic soda bottle works well also.
Steve

Nothing new, Cadiz Gun works has been making these for quite some time.
G3Ken

OK, I will admit there are a billion comments here. so I have not read them all. Here’s where the tax collectors, uh, BATF, will get their panties in a twist.

There’s a legal term called “constructive possession”. I don’t like it, but it dfoes exist. IF you possess an AR-15 and you also have an M-16 parts kitr, with a cut up receiver, you can still be charged with “possession of a machine gun” and do a long stretch in “Club Fed”. Reason being, according to their perverted logic, is that you can use those parts to readily convert them to a machine gun.

By the same logic, if you had this thread adapetr and had a couple spare oil filters in your garage for your next oil change, you could be charged with “constructive possession” of an unregistered supressor.

My advice. Don’t do it.
- ThomasD
  
  The narrator of the video clearly states that the adapter is a registered device. So the ATF has already declared it a suppressor all by itself. At that point you don’t even need to have a suitable oil filter in your possession – the adapter alone will get you in hot water if you don’t have the tax stamp.
  - David / Sharpie
    
    I think that’s the grey area, I guess you guys will just have to wait until someone gets charged with constructive possession, until then (If you have this device) keep spare filters at a friends house….
  - G3Ken
    
    I understand what the narrator stated. I was simply responding to the fact that lots of folks will think it is wrong to “register” a thread adapter. Personally, a thread adapter should NOT be a registered supressor. Only the turds at the BATF would even think to make it so. I was merely saying that if someone got the bright idea of creating on of these themselves, which would be quite easy, you could end up in hot water, even if it was never put on a gun. The phrase “constructive possession” is a DANGEROUS, slippery slope and has been used before. I understood what the original commentary on the video was.
  - David/Sharpie
    
    “If someone got the bright idea of creating on of these themselves, which would be quite easy, you could end up in hot water, even if it was never put on a gun”
    
    No shit, same with any suppressor, well, creating one wouldn’t be illegal, not getting a tax stamp would be.
- Bosefus
  
  Its a shame you are so damn stupid. There is NO possibility of a constructive possession charge with this device, because the manufacture WILL NOT SELL IT TO YOU WITHOUT A TAX STAMP ie form 4 transfer.
  
  This is NOT a “thread adapter” this is an END CAP for a SUPPRESSOR. Got that?
  
  This “adapter” IS a REGISTERED firearms suppressor. The oil filter is just a “wipe” Since you cant seem to get this through your thick fucking head why dont you just call the ATF and get a letter of clarification. {they have already ruled on and approved this device}
  
  Once again this is COMPLETELY legal to own. You just have to get a tax stamp to own it. And no, they wont sell it to you without you first getting the stamp.
  
  Why dont you go buy a silencerco osprey and tell me where the serial number is? ON THE END CAP! not on the monolithic core, not on the outer body {like a ti-rant}
  
  So STOP SPREADING DISINFORMATION!!!!
  - David/Sharpie
    
    Calm your hormones, no need for the swearing and name calling.
    
    There have been many comments saying it may not be legal, or there could be some legal trouble with having oil filters in the garage and owning this adapter.
  - Derp
    
    Hate to tell you, but ATF says NOPE on these
    
    This is a screen cap of the letter.
    
    imgur.com/Eh4Pe.jpg
  - David/Sharpie
    
    Derp: What year was that letter from? Last I checked, the ATF now allows the end user to replace the baffles on their legal suppressors.
  - http://www.MichaelZWilliamson.com Michael Z. Williamson
    
    Per that letter, if you register a device with an oil filter already assembled, the oil filter is part of the assembly. And you may not either re-gut the filter, or replace it.
    
    Since this device is a registered suppressor by itself, and the can is considered a replaceable wipe, that problem doesn’t exist.
    
    It’s a legal quibble, but it makes one legal and the other not.
    
    It’s very important to read EXACTLY what a legal decision says, not accidentally read into it.
- edgreywolf
  
  Please look up your facts…..
  
  the BATF Has sent out a letter that will correct your statement….
  it would not be considered a machinegun…..
  
  i will have to see if i can find a copy of the letter
  
  E
- george
  
  This is simplicity at it’s finest. Everyone should own a solvent trap or make one until their are 100,000 out there. Kinda of hard to enforce this one in the backwoods and at Auto Zone, Let’s propose a $100 cleaning rod tax and number them to the rifle/pistol as well. I am sure everyone is for a bigger and bigger ATF that we all can be proud of.
eng30312

I just figured it out! The oil filter is considered a wipe (and therefore, not subject to regulation) because the bullet punches through it. If you had a oil filter with a pre-punched hole, then it would be a suppressor part.
Ty

Why not try soaking a new oil filter in mineral oil or a similar clean substance… either way it sounds like a inexpensive good time!
Jack

I really don’t understand what all the comments are about. Someone has invented a device that will allow even the most frugal or the least able to afford it, an opportunity to utilize a suppressor. I don’t understand why everyone has to criticize or accuse as being conspiratorial or whatever crap they are accuse him of. The inventor is simply exercising his right to act as a capitalist. If you don’t like it, don’t buy it but don’t give him a bunch of crap for doing what he has the basic right to do.
It seems that once again, those that can do, and those that can’t, criticize, complain and accuse.
What the hell has happened to this county, especially to gun owners?
Just a bunch of BS if you ask me.
toby

i made my own adaptor in my machine shop in no time . being an x – felon i have now a supreesor for my full – auto guns that works pretty well. so #*%* the ATF.
- LP
  
  but… they made a law that makes that illegal!!!
- Jim
  
  Can you post instructions on how to make it.
LoggerLee

Use a red dot/holosight and keep both eyes open, will work just fine.
Buy a 13/16″x16 short threaded bolt and chuck it in the lathe and drill and tap it for 1/2″x28 threads inside and you’ve got the same thing for about $3.00

But it ain’t worth the BATF trouble to use it as a silencer IMO.
- LoggerLee
  
  Actually I guess ya don’t just buy a 13/16″x 16 bolt…lol oh well buy the die I guess.
http://www.theplaceforclassifieds.com Bucky

Wow $200 tax stamp for a $55 silencer? I guess they have a tax for almost everything.
Rick_in_VA

What about the air rifles which have built-in sound suppression? Or have these idiots not caught on yet. Some air rifles are as loud as a .22.

It all goes back to the same thing. What do they not understand about “shall not be infringed” ?
- Ken
  
  An rifle is not classified as a firearm. So if you want a quiet firearm buy a high powered air rifles. There are some made that have as much power as a 30-30.
  - ken is a re re
    
    as a 30-30? u must be high
ant mich

Is it illegal to have tapped adapters in these measurements without a tax stamp? Why would it be when it is such common measurements. I’m sure that these measurements r paired for many reasons. how could it be illegal unless you first used it as a suppressor. This is something i would never be interested in using , making or owning ,but I’m sure that owning a piece of steel milled to universal measurements could not be illegal with out being attached to a firearm. for example if you could use such a devise for a propane fish cooker ,could it be considered a suppressor while cooking fish because it has the same common thread sizes. There are millions of uses for threaded adapters. Look how many options are available that all ready fit those measurements. Does it mean anything that is tapped and could possibly fit the threaded barrel of any gun made is required to have a tax stamp. This is not meant to offend, I’m just wondering if owning any adapter with measurements commonly used for barrel threads and oil filters, for any purpose, can be mistaken for or classified as a suppressor. Remember without the filter or another part this adapter can not suppress sound. My opinion is that only the suppressing parts should require a tax stamp. There are just to many options on adapters and they can easily be mistaken for suppressor fittings. It would seem there are to many options out there. And with youtube stoking peoples minds, you will surely see more. Support the NRA and GOD BLESS America. She needs all the blessings she can get at the moment.
http://thefirearmblog john

ant mich,

What you fail to understand is that the adapter is a registered silencer with the BATF. I own a sparrow 22 silencer and the registered silencer part is the tube, the baffles and end caps are not serialized and are not the silencer part. that is how Silencerco can honer their guarantee to replace the baffles and you do not need a new tax stamp.

If you make you own adapter it is not illegal until you attach it to a filter and then attach that to a weapon. Now you have broken the law.

If the adapter is registered with the BATF than it does not matter what it is attached to, you are covered and are not breaking the law. The adapter is a registered silencer regardless of whether it is attached to a filter or not.

The adapter will not suppress sound but it is registered as a silencer. I think this is an awesome product and is high on my gotta have list.

The big blue filter looks like it can take take high pressure. Consider this; I could put this can on a Mosin Nagant and shoot corrosive surplus ammo. Would you do do that with a $800.00 can + $200.00 tax stamp.
max

The tax stamp is all bs. these people who created this seeked out to get the adapter registered so they can have a monopoly on this idea and sell it vs people making their own from bolts at a hardware store. BATF will take anybody’s money for anything they want to register or find an excuse for. This means BATF did not actively seek this nor do they really care. The cool part about all of this is the parts alone are not illegal to have. assemble it on a gun and its a grey area. It may very well be that ordinary parts which have other uses assembled in this fashion are not taxable, but im sure BATF will look for any excuse to get more money out of us.
Big Rich

So for those of you that are wondering how they can sell the “oil trap” without the stamp, and you can use it as such, bolted to the rifle, without breaking the law, that’s because the gun should be disassembled by then, so the lower receiver of the gun is not attached, and as we all know, the lower reciever is the “firearm” and the rest is just parts, so having it attached to your upper reciever is of no censequence. But anybody with half a mind should have understood that. The “registered” silencer end cap, is the same device, only registered to be on the gun while in use. So basically, one could (theoretically) use the oil trap as a suppressor, but they would do that full well knowing they are breaking the law, and asking for “club fed” as the other poster put it. If you really just wanted this as a “worst of times” deal, you could very well just buy the oil trap, use it just as an oil trap, and when shit hits the fan, you can use it as a silencer end cap. Now I am not, for even a single inkling of a second, suggesting you do this, as it is highly illegal, but in a disaster situation, I doubt you would care if the BATF is okay with you using it that way when it is at the cost of life and limb.

And just a thought, can’t you guys just use the a-1 style upper reciever handle with the picatinny adapter to get yoir optics above the silly blue oil filter on your AR-15s? And the PS-90 tri-rail would be perfectly fine with the normal iron sights (or any normal optic) because of their raised nature, making this adapter ideal for that gun. Too bad 5.7×28 ammo is so pricey!
- Big Rich
  
  I realize I probably wasn’t going to make much sense with that description of the a-1 picatinny rail, so I thought I would share this image to explain it a little better:
  
  http://image.dhgate.com/albu_270677877_00/1.0×0.jpg
  
  Using this to mount your optics to would negate the problem of the oil filter. And you don’t have to have one of those flimsy looking raised optics rails. Also, the iron sights should even be out of the way enough for most smaller cans. And instead of using oil to help the suppressor/filter, just use clear water based hand soap. It’s a viscous non-flammable liquid, so it foots the bill perfectly, and might even make your day at the range smell fresh!
- David/Sharpie
  
  I don’t think it would be illegal to mount it on an assembled firearm, I usually keep mine fully assembled when cleaning, I think the point is to not use it as a silencer, I think if the police caught you with one on a loaded gun you would go to jail, I think if it was unloaded, it would slide.
Big Rich

Yeah that sounds about right, but I wouldn’t want to be caught red handed with it on a fully assembled rifle just for safety so I don’t get boned by some mean ol ATF tyrant that decided he didn’t like me for whatever reason. I would want them to have as little “legal” ammunition against me as possible if I got in trouble. I could be arrested for anything, and having “an assembled un-registered silencing device” on an “assault rifle”(my primary hunting rifle), would complicate that tenfold for me. It’s just not worth the trouble for a worry wart like me.
- David/Sharpie
  
  Yeah I know, especially with public opinions on “assault weapons” you wouldn’t wanna do anything to screw yourself over with the ATF.
spydie

I think all you guys missed the point. If you are going to use a supressor, something has to be registered as such. In this case it’s the mount. The actual suppressor, because it’s an oil filter, can’t be registered. The mount is NOT illegal to own nor put on your gun without the NFA stamp (I’m talking about a homebuilt one, not the registered one this guys sells). YOu can make adapters all day long and put them on the end of your gun. You can also put empty cans on the end of your gun. It only becomes a suppressor if it reduces the noise level of the firearm. That means AT ALL. EVEN A TINY BIT. If what you put on the end of your gun does NOT reduce the noise level, then it is not a suppressor and it is legal. So making your own adapter and screwing it on is not illegal. But, when you screw on the oil filter, it then becomes illegal without the NFA stamp. Now, then, this manufacturer helps you out by having a registered piece, you pay the tax and when you get the adapter, you have the makings of a legal suppressor that you can go out and play with as soon as you get it (6-7 month wait for the Feds to process your tax paperwork). The other way you can do it is to make your own adapter, then you have to download and fill out the paperwork and send in the $200 for a manufactured suppressor, and you HAVE to stamp the threaded non-throw-away piece with a serial number of your choosing. You can’t use it with a filter (you CAN screw it on your gun and use it immediately, but not with a filter) until you get the OK from the Feds (6-7 months.) You can visit the ATF.GOV website and read the law yourself. But I just condensed it for you. Nothing is a suppressor if it doesn’t lower the noise of the gun when fired.
Aranoce

OK from what i understand the adapter is the registered part of the suppressor with the econo-can you still have to jump threw the hoops with the atf on it. the filter can be changed its not considered a integral part of it. As far as the solvent trap goes its the same thing but its not registered so you can have it on your gun with a oil filter on it but as soon as you got a hole in the oil filter the feds are going to screw you because its not licensed. if you got the solvent trap and want to get it licensed then you need to form one the trap so you don’t pay the piper on it after you put a unique serial applying to you on it.
dadcats

why not make your adaptor then make a muzzle brake to screw on to that, could you leave it on your rifle?

Econo-Can: A $55 Suppressor

Steve Johnson

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