I resisted the urge to jump on the Battlecomp/PWS Brake/Surefire Brake bandwagon until I've become semi-competent with my weapon with the standard A2 FH. It'll probably be years before I feel "competent enough".
There was a guy shooting with the Surefire brake on a 10.5 SBR at a class I was at recently. The concussion was pretty obnoxious.
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