Posted: 9/10/2013 4:31:57 PM EDT
Can someone tell me which 16" upper would be best to use for a AAC 762-SDN-6 suppressor? The choices are 16" barrel w/carbine gas system or 16" barrel w/middy gas system? I vaguely recall reading somewhere online that a middy may not reliably function with a suppressor without juggling the buffer weight to tune it to the ammo being used. Right now my 11.5" Noveske will eat anything I throw at it without fuss. I would like the same performance out of a non-NFA upper. Would dropping the barrel length to 14.5" hinder or help?