Big Bore Silencer and Suppressed Bolt Carriers from Gemtech

My last day at SHOT I finally got to stop by one of my last vendors, Gemtech. Even near the end of the show, their huge booth was still packed with hardly any room to spare.

The new products that were being showcased at SHOT include The Arrow (and the Arrow’s 3-Lug QD muzzle brake) and their new Suppressed Bolt Carrier.

So shooting suppressed, while having a number of benefits, also can cause some issues for you, especially if you are over-gassed (fun things like blowback and mega-dirty actions). And that is one of the reasons that adjustable gas blocks have become a thing. Gemtech has come up with a pretty interesting idea. They have engineered a bolt carrier that has an adjustable vent. With the flip of a switch you can choose between suppressed and unsuppressed modes without having to make more complex modifications (like installing an adjustable gas block or different buffers). The selector itself is on the side opposite the ejection port and cannot accidentally flip while the bolt is installed in the rifle. They offer the new bolt carrier in 5.56 and 7.62 configurations (will not fit Armalite AR-10).


Ejection port side. Just to the left of the logo (on the 5.56 BC) you can see the exhaust port.


Closer view of the selector switch. There is a “U” and “S” for unsuppressed and suppressed respectively


5.56 to the rear, 7.62 in the front


The other new offering is a large bore suppressor, in 338 Lapua Magnum to be specific, with their new 3-lug quick detach muzzle brake system. The suppressor is made of titanium and 7075 aluminum and is finished in black (and tan) cerakote. It is a full 12 inches in length and 27 ounces. If you don’t want to use the QD version, you can directly thread the Arrow onto your barrel. The housing was designed to dissipate heat to reduce mirage (the rep said they are seeing a reduction over twice as many rounds fired, somewhere near 6 rounds). With the suppressor installed on their test rifles (I forgot to get the specs) they were only seeing a 1/4 MOA shift. Additionally, you can use their “Blast Jacket” with the muzzle brake.


Quick detach lug system. Note that the lug on the top is slightly larger to ensure the device is installed the same way every time.


The square hole in the middle will accept a 3/8 driver for ease of installation and removal.


Arrow, 3-Lug QD Brake and Blast Shield


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Tom is a former Navy Corpsman that spent some time bumbling around the deserts of Iraq with a Marine Recon unit, kicking in tent flaps and harassing sheep. Prior to that he was a paramedic somewhere in DFW, also doing some Executive Protection work between shifts. Now that those exciting days are behind him, he has embraced his inner “Warrior Hippie” and assaults 14er in his sandals and beard, or engages in rucking adventure challenges while consuming craft beer. To fund these adventures, he writes medical software and builds websites and mobile apps. His latest venture is as one of the founders of; a search engine for all things gun related. He hopes that his posts will help you find solid gear that will survive whatever you can throw at it–he is known (in certain circles) for his curse…ahem, ability…to find the breaking point of anything.


  • JumpIf NotZero

    Their 3-lug system is pretty funny considering they just spent years downplaying that their bi-lock 2-lug might not lock up perfectly (it doesn’t). So, congrats Gemtech, you’ve made it to 1960/70s HK technology. Fwiw, to which I still would not trust for precision rifle – AT ALL.

    There was a lot of hype about their “the one” can. A 22lr to 300wm can. It was ok, but I certainly wasn’t impressed. It was heavier than I was expecting and had a thread-on and Bilock (see above) option. I just… I don’t know Gemtech. Maybe next year.

  • JumpIf NotZero

    On the suppressed bolt carrier, I kind of want more adjustment than two pre-determined settings. Esp after seeing the difference in back pressure between AAC (huge) and Surefire (fairly minor) cans.

    I’m not convinced that system will turn well with that little slot after a lot of use.

    • Doc Rader

      Yeah, time will tell. I think the concept is definitely an interesting take on the problem though.

  • echelon

    It’s funny to see all the little cottage industries that spring up due to government over-regulation.

    I’m sure the vast majority of shooters would much prefer to shoot suppressed all the time and thus integrally suppressed guns would be the norm by this stage of the game had the evil empire not stepped in and deemed them verboten…

    • Doc Rader

      Yeah, I do have to say, I’ve never really understood the lock down on suppressors. Was it really aimed at poachers in the ’20s and ’30s? And why was it categorized as a firearm itself? Just seems like a dumb thing to lock down… 🙂

      It’s not like there are scads of dark garbed assassins running amok and the only reason they are so successful is due to a 32 Db reduction at the cost of a six inch length increase to their weapon.

      • Wetcoaster

        I think it might actually be a North American thing. Every country/region has their own neurosis and hangups. We’re hung up on suppressors, Mexico, Italy, and I think France? have a hang up on military calibres. The Brits and Aussies have problems with semis and pistols, etc.

      • echelon

        It’s just government doing what government is designed to do. There doesn’t have to be any logical or sane reason.

      • bbmg

        Unfortunately in politics feels trump reals. Do you expect logic to calm the fears of those who buy lottery tickets in spite of the fact that they are statistically more likely to be killed in a traffic accident on the way to the store to make that ticket purchase than to actually hit the jackpot?