Royal Nonesuch Show Us How To Build Booby Traps!

Well. They are Booby Trap Alarms according to his Youtube video title but you could modify the design slightly and come up with something that undoubtedly violates some law here in the United States. Royal keeps it legit and has designed a trip wire notification device that uses cut down 12 gauge shot shells to let you know if someone has breached whatever perimeter you have established.

Royal’s videos are always interesting and I like that he has stayed true to his roots as a home built gun enthusiast even though he has received some flack for it over the years. As always, his design looks like it was built by some sort of super intelligent monkey, that also happened to be drunk.

It is quite simple and should be easy enough to replicate if you want one of these of your very own. The guides and mounting point are all standard nuts, the striker and shell holder are nothing more than some tubular steel stock, and the spring is pretty common as well. All you need to bring the design together is a small amount of welding talent, preferably with a high amount of experience in booger welds, and some time.

Check out Royal’s video below, his channel is chock full of great home built projects.

Patrick R

Patrick is a Senior Writer for The Firearm Blog and TFBTV Host. He likes guns and has liked shooting guns for as long as he can remember. You can follow Patrick on Instagram @tfbpatrick, Facebook, or contact him by email at

The above post is my opinion and does not reflect the views of any company or organization.


  • James Reeves

    If any of you guys plan on building one of these just hit me in my DMs and I’ll set up your retainer via PayPal

    • TheNotoriousIUD

      Ill hit you in the DM’s just for the fun of it.

      • iksnilol

        I’d hit him somewhere else 😉

        AY LMAO 😉 😉 😉

        • TheNotoriousIUD

          I was wondering when you would catch the scent of JR.

          • iksnilol

            Haven’t seen him post in a while.

            Though I still maintain.

          • Gary Kirk

            What you “maintain” is frightening my friend..

          • iksnilol

            Being scary is easier than being dangerous.

          • Gary Kirk

            He caught the scent of the fabric softener pouring off the overly tight T shirt from many thousand miles away..

    • Gary Kirk

      Little late today, would’ve put in a lude joke about iksni.. But don’t need to worry about it anymore, he’s been here and no need anymore..

  • gunsandrockets

    illegal zip gun?

    • TheNotoriousIUD

      Keeps the freshness locked inside.

      • …For 2-10 years!

        Not actually a zip gun under Texas Penal Code §46.01.(16), though, since it doesn’t have a barrel.

  • Scott Connors

    I saw an article along these lines in an issue of SOLDIER OF FORTUNE from the late 70s-early 80s, only it used a 7.62 NATO blank cartridge. I wanted to build some for reenacting, but a more knowledgeable friend pointed out that ATF could charge you for possession of AOW.

    • Sunshine_Shooter

      Only if it has a barrel. If it doesn’t have a barrel, it shouldn’t count as a firearm, as per my understanding.*

      *I am not a lawyer, and my advice should not be construed to be legal advice.

      • Gary Kirk

        Without a barrel “could” constitute an explosive device..

        • jamezb

          SO, -using that reasoning, all fixed ammunition outside the chamber is an explosive device …and i suppose it is, but it is a civilian legal explosive device. It should also be noted that because an item detonates a charge does not make it a federally regulated item either. Blasting machines are not federally regulated devices, though they may be regulated in some local or state jurisdictions.
          (Check out blasting machine detonators on ebay.)
          The explosive and the detonator [blasting cap] are the regulated parts, as defined by type and weight of explosive.
          Some “low” fused explosives are considered federally unregulated fireworks until they cross a weight threshold. Consider a can of black powder is quite explosive, yet it is legal to possess because it is not FUSED. Insert a fuse and you have a explosive, although fuse and powder are legal items.
          People shoot black powder cannons all the time, some with substantial charges, yet these “blank” firings as well as “live” firings with a projectile do not run afoul of federal law.
          What you have here is a firework. like a starter pistol blank, along with a device to set said blank off.
          It falls below the weight threshold of powder that would make it an explosive.
          [Consider the amount of fuse detonated explosive in a large civilian unregulated 4th of july star shell, and compare that weight to the amount in a cartridge]
          Now that being said, the altered cartridge might be construed to fall afoul of state or local fireworks laws IF fireworks are prohibited in those jurisdictions, -unless blank cartridges are exempted from those laws.
          You are looking at this the wrong way.
          You should compare it to a starter pistol.
          Please note the above is the legal opinion of a studied individual, but does not constitute legal advice in any form or fashion.

          • Gary Kirk

            Hence the quotation marks around could.. I was kinda being sarcastic, seeing as how the BATFE has been using logic such as this so far “successfully”..

      • Old Vet

        Where do they stand on the bang-sticks used in Scuba???

  • Rick O’Shay

    Even JB Weld would/should hold together reasonably well for one of these contraptions.

    • iksnilol

      Only needs to go off once when you think about it. And who cares where the retainer ring flies afterward?

    • Bill

      Go full redneck: duct tape.

  • Phillip Cooper

    Why on earth would you give this lackwit any of your bandwidth?

    • Rick O’Shay

      As far as lackwits go, he’s pretty clever. There are bigger ones doing stupider stuff.

      • Scott Tuttle

        I’m subscribed to his channel and watch his vids but he worries me with his lack of safety concern. eye protection at least, come on!

        • Edeco

          Early on I wasn’t sure if it was ethical to watch/praise him. But I’m like 95% sure he’s over age 18 now, so it’s not egging on a child. And he’s been doing it so long, and making industry connections, so it seems risky, but he apparently knows ehat he’s doing.

        • Rick O’Shay

          Yeah, ENDO likes to harp on him all the time about that.

    • Edeco

      Gasp! He’s a plucky, good-natured scamp who flaunts authority and produces machines with a little skill and a lot of juevos. Classic American character, like the kids in the books his name alludes to.

  • TheNotoriousIUD

    Why not do the same with just the primer and avoid the ATF?

    • iksnilol

      Would be cheaper too. I think small pistol primers are cheaper than a shell.

      • Rick O’Shay

        Here in the US you can get a box of 1000 for about $25-30, last I saw.

        • TheNotoriousIUD


    • Gary Kirk

      Ahhh.. The difference between a misdemeanor, and a sentence in Gitmo..

  • Don Ward

    Next on TFB. An article by a YouTuber teaching you the best way to dispose of bodies.

    This one weird trick?

    Having the hole pre-dug saves a lot of hassle in the middle of the night.

    • TheNotoriousIUD

      Thats kind of basic for the likes of us dont you think??

    • Grey Beard

      GPS dry wells. Work smarter not harder.

  • loopydupe

    ” but you could modify the design slightly and come up with something
    that undoubtedly violates some law here in the United States”
    Let’s not forget where we’re coming from. It’s more complicated to add a barrel to this alarm and make an AOW or add a real explosive to it to make a DD than it is to hacksaw a shotgun/rifle and make an SBS/SBR. In the sense of modifying designs, plain regular firearms are on iffier ground than this thing, with the absurd NFA.

    • Gary Kirk

      Discharging a round of ammunition outside of a firearm could result in “state” explosive device charges, not to mention local regulations..

  • For years there has been a device sold in South Africa that’s called the Bang-A-Lert. It uses a .22 cal Hilti DX Cartridge. It’s popular with farmers and rural home owners. I’m not sure why royal is using shotgun shells, that just seems dangerous, but, then again danger is what royal does.

  • Badwolf

    Liberator 2.0

  • Dan

    I figured he just scattered his homemade guns around hoping someone would use one and go kaboom.

  • Car54

    Back in the day we used a piece of flat iron to build those things. They work with 12 ga flares as well

  • .45

    Eh, one look at the thumbnail and I can figure out what he did, no need to watch the video.

  • Gary Kirk

    Yyyep.. Still waiting on the R.I.P. post.. Or the got locked up because.. post. This idiot is a red flag to anti gunners, that causes the rest of us more headaches..

    • Edeco

      Sounds like battered-spouse logic, blaming our side for the other’s aggression.

      I say let them be upset. If it were by cringey soldier of fortune wannabes that would be fine. By this darling rascal Nonesuch, all the better. It might tire the antis out, lure them to untennable positions, make them look (more) shrill. Worst case we lose ground or gain no more ground, but we’re acting cool not guilty.

      • Gary Kirk

        First off I don’t condone any kind of spousal abuse.. Second, I firmly believe in severely “punishing” anyone who is an “abusive spouse”.. But I never make a knee jerk reaction towards either side, must look into both.. Finally, this “darling nonesuch” is basically trying the rub their nose in it approach, which will eventually get your ass bit.. As you said, worst case, we’ll lose ground.. Or gain NO ground.. That’s unacceptable to me personally, I’d rather see the furthering of our interests, not take bets on if this jackass will further bans on things that aren’t yet..

  • Klaus Von Schmitto

    Yea that kid’s on a list somewhere.

  • plumber576

    Royal Nonesuch is a national treasure.

  • Stephen Paraski

    These devices are widely sold on net.

  • Lee M Attinger

    whatever, I learned all I need to know about booby traps in 1985 from the Asian kid in Goonies.

  • uisconfruzed

    Can I see that weld with a 7018 rod?

  • durabo

    PLEASE produce this commercially! Then, make sure you announce it through every conservative and gun-friendly medium.

  • scaatylobo

    Did I miss something,with the nut in the way —- there is no way to put a FULL LENGTH SHELL into the place of that bottom of the shell with a live primer.
    And I see that as a NON weaponized tool.

  • jcitizen

    We had a simpler solution in the old days when Kodak had the flash cubes, which we used as cheap easy perimeter simulation trip wires. We could easily attach fishing line to the flash cube firing spring, and set them off very expeditiously to indicate when OPFOR units were getting inside our defenses! They were great, because they were simple mechanics like a mouse trap! Percussion fired flash bulbs! Gave away the enemy every time!