just in case you were wondering....don't shoot .300blk subs in your tundra. I was shooting my novesky 10" .300BLK with 220gr subs on my Tundra using a thread adapter and the Can broke in half, spreading all baffles down range. I found the other half of the can 50yds downrange. no baffle strikes...

I'm working on a SBR build and thought about making it cycle 5.56subs. my SBR has a 10.3" 1/7 barrel with a Adams Arms piston running a Gemtech G-5 and an H2 buffer. I just bought two boxes of right to bear 5.56 75gr Action Cycling subs. I know these are for use in their own subsonic cycling up...