Weekend Photo: Building a suppressor legally

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Pete build his Glock suppressor legally from parts. He explains the procedure below …

As many of your readers are already aware, it is perfectly legal to make certain types of NFA regulated firearms, including silencers (suppressors). As is the case of making any firearm, all local, state and federal regulations apply. And, before you begin any manufacturing, make sure you have a properly approved ATF Form 1.

This 9mm suppressor is six inches long, with 10 formed freeze plugs for baffles. For it’s length and cost (sub $200 not including the NFA Stamp) the sound reduction is impressive. Although slightly louder than its longer commercial cousins, it has a pleasant tone when shooting 147gr JHP ammunition.

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Although this was a fun and satisfying project, it is not for everyone. To properly manufacture a suppressor requires the correct tools, skills, design/planning, and patience.

As always, safety and legality take precedence.

Resource list:

ATF EFORMS: Form 1 – Application to Make and Register an NFA Firearm (Silencer)
SDTactical Arms six inch Titanium D-Size tube, LID Adapter, end cap and freeze plugs.
Liberty Mystic Booster Assembly
Glock 19 – Third Generation
Gem-Tech G19 Threaded Barrel
Titanium Cerakote
NFA Engraving



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.


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  • There’s always those “solvent filter adapters”

  • In theory, would this benefit someone bored and prototyping – for isntance your suppressor has serial number UC0079. Well, your first registered suppressor sucks, so you remanufacture it, using same serial and destroy the previous. Legal?

    • Bill_J

      My understanding is you have one shot to build it on a form1. You submit “plans” to the ATF for the final product.
      I know that has to include overall length of final product, not sure of baffle design or anything like that.

      • KestrelBike

        What a PITFA. Very frustrating doing your due diligence to stay legal and try not to break the bank at the same time. Silencers seem like an item with a huge profit margin once they’re past R&D and into manufacturing; it’d be nice to DIY if R&D isn’t that important to you and you’re not chasing decibels without having to watch your step at each point.

        • Southpaw89

          I know right, stick a soda bottle on the muzzle of your .22 and your a felon if caught, but save $200.05 if not, while someone who tries to make a suppressor legally has to jump through endless hoops to comply with the law. Makes you wonder how many people just skip the process all together, and trust the effectiveness of the suppressor to conceal their efforts.

          • KestrelBike

            Or, how many people just create one not even *knowing* they’re committing felonies in the eyes of the law. They’ve made the weapon safer in terms of hearing damage, using actual logic, what have they done to suddenly be breaking the law?

    • Ben

      Not legal. But only if they catch you.

    • Budogunner

      The serialed pay cannot be replaced. Google Gemtech rebuild to learn about that fiasco.

    • Southpaw89

      Probably not, but if those oil filter suppressors are any indication, you could serialize the tube, or even a threaded base, and experiment all you want with the baffles.

      • Amplified Heat

        Making anything but replacement ‘wipes’ requires a manufacturing FFL/SOT and without that is highly illegal. It’s BS, but true.

  • Nicks87

    Looks good but those sights look too short to see over that monster can.

    • Pmdata

      They are. However “shooting through” the suppressor is easier than it seems. It’s still Glock-accurate.

      • Nicks87

        Yeah if it’s just a fun gun it probably isn’t a big deal.

  • 6ShotsOr5?

    Are some of the parts re-usable after you wear out the other parts, meaning you can save some money on the parts And do a re-build? Which part(s) is(are) “the suppressor”?

    • Pmdata

      There’s very little chance of wearing out any of the parts of this build. The suppressor will go through tens of thousands of rounds before a rebuild or repair (by a qualified professional) would need to be considered.

      And if you have that kind of ammo money, you can afford to build a new can.

      • Budogunner

        What material did you user for the blast baffle?

        • Pmdata

          Stainless tubing. Just a small piece. More like a spacer.

          • Giolli Joker

            Are the chambers empty?
            I wonder if there would be any advantage adding a stainless steel wool lining, as it’s done in some mufflers.

          • Pmdata

            Steel wool actually burns pretty well, so I wouldn’t go for that packing material. Older silencers were packed, but those designs are dated. Also, I’m not sure you’d be able to replace the packing material on your own.

          • Giolli Joker

            I was thinking coarse ss wool, it shouldn’t be as flammable as standard fine one… however, yep maybe it would be more hassle than benefit.

  • Budogunner

    The booster assembly alone has an MSRP of $155. Are we to believe all other parts and services were less than $45? If so, impressive.

    • Pmdata

      Good point. I have a Liberty Mystic that is using the fixed barrel adapter almost exclusively. So the booster was just collecting dust. I forgot to factor in the cost of the booster to the build. My apologies.

      If you went with stainless steel over Ti, you could make up much of that difference.

  • TheSmellofNapalm

    Pete build Glock suppressor. Suppressor very quiet. Pete quiet man, keep to himself. Little noise, he shoot Glock.

  • MrEllis

    That’s a nice looking can. It’s subtle but not plain. Never really cared much for them but this is a nice set-up. Job well done.

  • jeff k

    at least you can own one. here in R,I we cant make , buy or sell them… smh

  • Sumner_Vengeance

    A video with and without the suppressor on would be helpful.