Quick disconnect suppressor systems and a potential safety issue

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MCMXI

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I "have" four AAC suppressors including a Ti-TAN-QD, Mk13-SD, 762-SDN-6 and a Ti-RANT. The Titan and Mk13 interface with specific adapters so there's no chance of a mixup. However, I have a number of 51T flash hiders on .308 and .22 cal rifles so that i can move the 762-SDN-6 between them. I've decided to buy either an M4-2000, 556-SD or SR-5 so that I have a dedicated .22 cal suppressor but it occured to me that the first two use the 51T interface. I could see a situation where I, or more likely someone else, attach a .22 cal suppressor to a .308 cal rifle. The SR-5 uses a 90T taper mount which I can't find on AAC's website but this would seem to be the obvious choice. Anyone else give much thought to decreasing the chance of mixing up suppressors?
 
Anyone else give much thought to decreasing the chance of mixing up suppressors?

I'd sure hope that everyone does!

The most common potential screw-up is 9mm, .22lr, and 5.56 are all usually threaded 1/2x28.
 
But once you screw on a QD type flash hider such as the BLACKOUT 51T the threads become irrelevant. QD is convenient but potentially dangerous if you're not paying attention. We could probably say that about most things related to firearms though so maybe I'm making more of it than I should.
 
But once you screw on a QD type flash hider such as the BLACKOUT 51T the threads become irrelevant. QD is convenient but potentially dangerous if you're not paying attention.

Its the exact same issue as thread commonality if multiple incomparable suppressors fit the QD mount.
 
wally is right--the issue is the same if you have direct-thread suppressors that fit multiple hosts. I guess the only difference is that you have a few more seconds to realize your mistake when direct threading, whereas quick disconnects allow you make the mistake quickly.

But I have a 9mm can that I use on subsonic .300 BLK and it uses 5/8-24. I also have a .45 can awaiting tax stamp approval, and it will go on my .458 host that uses 5/8-24 threads. Once I have both cans in hand, it would be possible to accidentally thread the 9mm can on the .458, which would end badly.

It's really just a matter of making a habit of checking the caliber on the can every time you install it on a firearm. That should keep YOU from making the mistake. Beyond that, you either have to watch other shooters like a hawk or train them appropriately as well.

Aaron
 
In my experience most .223/5.56 barrels have 1/2-28 threads whereas most .308 barrels have 5/8-24 threads. AAC direct thread suppressors follow that trend too. My point is that AAC offers 51T flash hiders for both threads so although you can't thread a .223 can onto a .308 barrel, with the QD you can definetly make that mistake. As has been mentioned, I will need to be diligent.
 
I also have an AAC SDN-6. When I eventually get a dedicated 5.56 can I'll specifically avoid getting the M4-2000 for a few reasons, one of which is because it looks and feels too much like the SDN-6. Even if I end up getting a Saker with the 51T MAAD mount, it looks and feels different enough from my SDN-6 that I think I'll be much less likely to mix them up. After all, it would really suck if this happened:

UnDUE.jpg
 
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