I've got the early SIG SRD 556 can (direct thread) that wasn't made for very long on a 20" heavy barrel AR. IIRC the adjustable gas block is a JP brand that's turned way down, no irons. I put black RTV around the charging handle to keep the crap out of my eyes. Full auto BCG, nothing fancy.
There's more than a few ways to skin this cat.
I have found that a properly tuned gas system, buffer weight, and quality suppressor negates the need for any sort of adjustable gas system.
A 12.5" barrel with carbine-length gas and a H2 buffer, or a 14.5-16" barrel with mid-length gas and a H1 buffer, in tandem with a SF 5.56 SOCOM suppressor perform wonderfully.
If you absolutely want to get something tunable, Noveske's Switchblock is a good option.
Personally, I prefer the good ole 20" barrel + rifle length gas, as it gives the system enough of a margin to eliminate all of the nasty over gas issues.
I have a Surefire SOCOM 556, KAC NT4 and Allen Engineering (Ops 12). Run them on 18”, 16”, 12.7”, 10.5” and 10.3 uppers. I use an H2 buffer for the 10.5 and 10.3. Standard for the rest. Never had a FTF or other issue. Never saw the need for an adjustable anything. More parts to create issues.
Fire folded repeatedly with the Law Tactical ARIC (AR Internal Carrier) The ARIC replaces the Complete Bolt Carrier Group and Recoil System of standard AR15 style firearms. ARIC (AR Internal Carrier) is designed to drop into your host firearm with the LAW Tactical Folder Stock Adapter (FSA).
Ok. Thanks guys. I was just wondering if it was something I should do. I got a YHM Turbo T2. On a 16.5in barrel. I bought it for a novelty. But what you guys have been telling me it sounds like I should just upgrade my buffer.
Remember, not all suppressors are created equal.
OSS flow through cans will SIGNIFICANTLY reduce back pressure, but sound reduction is a little less than traditional baffled designs.
AAC cans are spooky quiet, but over gas just about anything.
SureFire cans do an excellent job mitigating first round pop/flash, and aren't as bad on gas blowback, but sound reduction isn't ultra quiet.
KAC cans are just there for guys who hate money
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