Suppressors Who asked about 5.56 through .30 AAC cans?

[Strykervet]

Someone on here was asking about difference in sound between a 5.56 fired through a .30 can vs. a 5.56 can and it was AAC cans in particular (but I'm sure this would apply to others as well).

I tested that out for 'ya but I've been busy and forgot to mention it. I have a couple SDN6's and 556SD's. Basically the same can in two different calibers, the 5.56 can is a tiny bit shorter compared to the .30 like most are. I'm assuming the internals are the same...

In all the years I never actually compared 'em side by side on purpose. I knew the .30 cans are deeper and throatier with 5.56 but that was it, and once I got the 556's I quit using the SDN6's on the 5.56 rifles.

Anyway, I was surprised to find that the smaller 556SD didn't just attenuate the sound to a higher pitch but it also reduced the overall noise significantly enough that it was obvious to two different people. So yeah, a one size fits all will work but a dedicated can for not only the caliber but also the application will always give better performance than not.

FWIW I get similar results between a TBAC Ultra 9 in 6.5 and a 30CB9 on a 6.5G but I always wrapped that difference up to being the difference between those two models, but perhaps it's not that simple.

 

[Jigstick]

I shoot my 556s through a 30cal SilencerCo Specwar, DeadAir Sandman L, and DeadAir Sandman shorty. The Sandman’s I’ve done it not have with 30cal and 223cal end caps. Stupid quiet compared to my buddy’s using dedicated 223 sized cans. Maybe it’s the increased volume in the tube?

 

[Killswitch Engage]

volume typically always wins

 

[jetmd]

I run my AAC 726SD on my wife 16" AR all the time.

Works Great! Even with the dreaded 51T ratchet mount.

 

[chrismartin]

I run my AAC 726SD on my wife 16" AR all the time.

Works Great! Even with the dreaded 51T ratchet mount.

There is a company called ECCO Machine and Fabrication (you can find them on facebook) that can convert AAC cans to use Omega mount inserts (like all the Omega mounts, Dead Air KeyMo, Q Plan B, Griffin Plan A, etc).

I'm sending my old AAC M4-1000 for them to convert for use with a Dead Air Keymo to unify all my silencer mounts with my Sandman-K, etc.