I’ve been thinking of going to the next level with my collection, and get a 5.56mm rifle suppressor. Unfortunately, I don’t have much opportunity to shoot suppressed weapons, so I’d like to pick your collective brains.
I can’t SBR in WA state, so I’ll be mounting it on 16” guns (semiauto). Therefore, I’d prefer to keep the OAL as little as possible. It will spend 90% of it’s time on one particular rifle (a 6920 or possibly a BM ACR). However, I’d like to shoot without it and also mount it on other guns from time to time. So, a QD or QD-like attachment would be nice (if I can get the can off and on in less than 10 seconds, and the flash hider stays on that is sufficiently QD for me). Minimal POI shift would be nice (if it’s less than 1-2 MOA, I would be happy). Obviously, I’d like to keep the weight down too.
I’d like to shoot the can dry, and would like to go without hearing protection outdoors for at least a few rounds (I’ll wear plugs when messing around on the range). I’d also like to avoid too much permanent hearing loss if I touch off a couple rounds indoors.
As far as cost goes, I know NFA isn’t a cheap game to play. I’d like to get a suppressor and mount for about $1000 (not including the stamp). I know the Surefires are more, and I’d be willing to stretch for it if they offered a compelling advantage over some other choices.
So, I’ve asked for the moon and the stars. Here are my desires in order:
-Minimal addition to OAL
-QDish capability (off and on in less than 10 seconds, but I want the flash hider/mount to stay)
-Good dry sound suppression performance (hearing safe outdoors, for at least a couple of shots)
-Minimal POI shift (1-2 MOA)
-Lightweight (I see most cans are in the 15-20 oz range, so I’d like to stay in there, the lighter the better)
So far, the list of cans I’m researching is:
Ops Inc 15th
AAC M4-2000
Surefire FA556AR
I won’t start another pissing contest by asking “Which is better?”, but I would like to ask some specific questions about them:
I see most guys prefer the Surefire FA556K to the FA556AR model. My assumption is that it’s because the K is better for SBRs. But are there other performance differences between the two that would make the K a better choice for my application? When I looked at the specs, I thought the AR was more suitable because of its reduced overall length added. But it seems there are way more K’s being run than AR models (at least from what I’ve seen on the boards). Am I missing something?
AAC seems to have a dizzying array of cans. I like the size of the SCAR-SD and 416-SD models, but assume that they traded some level of sound suppression for that reduction in size (per the specs from the AAC website). I know the specs say they are louder, but is that a significant difference? For those that have shot them side by side, is the SCAR-SD (or 416-SD) significantly louder than the M4-2000?
Thanks for your time.


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