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Thread: Need recommendations for a suppressor for full auto use

  1. #21
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    Quote Originally Posted by JoshNC View Post
    DT cans SUCK for fullauto. I have AAC M4-2k (51T), SF 762 SOCOM RC, SWR Specwar2 re-cored and with the mount upgraded to ASR by SiCo, Rex MG7 direct thread, and DeadAir Sandman K. The sandman is the best of the bunch for FA - best mount with a full circumferential gas seal, easy on/off, doesn’t bind, replaceable endcap with options for 7.62 or 5.56 exit bore diameter and the option for flash hider endcap, and durable. I’ve done lots of mag dumps on the DA.
    Direct thread rifle silencers are great for full auto and normal semi auto use. The issue is when people don't buy the right type of direct thread silencer. If it doesn't have wrench flats or if it doesn't have the SIG 25 deg taper interface when hand tightening, then it's likely it'll come unscrewed during use. Use a silencer with wrench flats or use the SIG 25 deg taper interface and that problem goes away entirely.
    Previously did all design work at CGS Group, 2014-2024.

  2. #22
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    Quote Originally Posted by paco ramirez View Post
    Direct thread rifle silencers are great for full auto and normal semi auto use. The issue is when people don't buy the right type of direct thread silencer. If it doesn't have wrench flats or if it doesn't have the SIG 25 deg taper interface when hand tightening, then it's likely it'll come unscrewed during use. Use a silencer with wrench flats or use the SIG 25 deg taper interface and that problem goes away entirely.
    You’re far more knowledgeable about this than I, and I’m sure you’ve tested this extensively. I’ve never seen a DT can on a traditional 90 degree shoulder that stayed tight with FA use. Tapered shoulder seems solid, but if I’m going with something proprietary I’d rather just use a good QD mount.
    Last edited by JoshNC; 07-01-21 at 18:23.
    SLG Defense 07/02 FFL/SOT

  3. #23
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    Quote Originally Posted by paco ramirez View Post
    …If it doesn't have wrench flats…then it's likely it'll come unscrewed during use. Use a silencer with wrench flats … and that problem goes away entirely.
    Any general torque recommendation for someone attaching DT?

  4. #24
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    Quote Originally Posted by JimmyB62 View Post
    The warcomp has a big negative impact on suppression and even Surefire does not recommend it with their can if you are shooting suppressed regularly. All the other compatable mounts do pretty well.
    Do you have a link about the warcomp not being suppressor friendly?

  5. #25
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    If you can find the old Gemtech HALO (steel) suppressors they do nicely on full auto and have a fantastic mounting system. But once they are smokey hot you might have to let them cool for 6 hours and still need a strap wrench to unscrew the suppressor from the coupling.

    Current HALOs are titanium and while rated for full auto, I've yet to see a titanium can that really holds up to a LOT of full auto use.

    In full auto I'd be very, very leery of any direct thread suppressor. It only has to walk a little bit before you put a round through the end cap. Been watching people shoot full auto / suppressed since the early 80s when they were still using wipes and packing with mesh and I've seen a lot of accidents.

    Suppressors have come a long, long way since then but one constant I've seen is a decent mounting system beats direct thread every time when talking full auto. Direct thread on semi autos or bolt guns is a completely different animal.

    Also SureFire is known to be a tank more than it's known for being ninja quiet. SF is what you give to the guys who are going to swim with their rifles and otherwise abuse the shit out of them.
    It's hard to be a ACLU hating, philosophically Libertarian, socially liberal, fiscally conservative, scientifically grounded, agnostic, porn admiring gun owner who believes in self determination.

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  6. #26
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    Quote Originally Posted by JoshNC View Post
    You’re far more knowledgeable about this than I, and I’m sure you’ve tested this extensively. I’ve never seen a DT can on a traditional 90 degree shoulder that stayed tight with FA use. Tapered shoulder seems solid, but if I’m going with something proprietary I’d rather just use a good QD mount.
    I've seen direct thread silencers stay tight on 90 deg barrel shoulders with full auto use very often. Like I said, the issue of direct thread silencers coming unscrewed during use comes from people that don't buy silencers with exterior wrench flats and people that don't utilize the wrench flats when provided. When a video is uploaded later today on YouTube I'll post it here and you can see an example.

    Your muzzle device you're using as a QD mount is still direct threaded to the barrel, it's no different than a direct thread silencer, except in some cases people choose to use thread lockers. If it's torqued on well enough thread locker is unnecessary anyway. CGS Hyperion Thread Adapters provide 90 deg shoulder barrels the ability to use the SIG 25 deg taper in a non-permanent way, so that's another option.

    Quote Originally Posted by JediGuy View Post
    Any general torque recommendation for someone attaching DT?
    If I remember right 35ft/lbs or so does really well.
    Previously did all design work at CGS Group, 2014-2024.

  7. #27
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    Quote Originally Posted by paco ramirez View Post
    When a video is uploaded later today on YouTube I'll post it here and you can see an example.
    This is just direct thread torqued to a barrel too: https://www.youtube.com/watch?v=jx_pqId55N8
    Previously did all design work at CGS Group, 2014-2024.

  8. #28
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    Are the Surefire cans .22 bores? I think what might be going on is port pop. The .30 bore can you mentioned is always going to sound quieter at the ear, but louder down range. I also know Surefire advertises minimal POI shift, and my guess is they're probably achieving that by maintaining symmetry. Great for accuracy, not so much for sound suppression. You need pressure differentials inside the can to indirectly interrupt the laminar column, and that requires asymmetry. Never seen the inside of one, but that's my best guess.

  9. #29
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    Quote Originally Posted by okie View Post
    Are the Surefire cans .22 bores? I think what might be going on is port pop. The .30 bore can you mentioned is always going to sound quieter at the ear, but louder down range. I also know Surefire advertises minimal POI shift, and my guess is they're probably achieving that by maintaining symmetry. Great for accuracy, not so much for sound suppression. You need pressure differentials inside the can to indirectly interrupt the laminar column, and that requires asymmetry. Never seen the inside of one, but that's my best guess.
    From the internet:
    D206542E-9B2C-452C-BD94-3709F21742C5.jpegFF37B848-23E8-4958-AFEC-1417F559B7AA.jpegF7EBF920-A267-479A-BFCC-C195545BC6CC.jpeg

  10. #30
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    Definitely optimized for accuracy. Symmetry throughout and nearly flat baffles with no clipping.

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