Forward Controls 1215KM
Let’s do away with ambiguities and insinuations as to what it is and what it does, 1215KM is a brake, it’ll be loud, and its concussion will kick up dust visible from the next county if you shoot it from a prone position without a sound suppressor. 1215KM is meant to be used with a Dead Air sound suppressor attached.
JMW (Joint Muzzle device Wrench) was designed specifically for use on suppressor mounts: https://www.forwardcontrolsdesign.com/jmw-joint-muzzle-device-wrench.html
Screw driver not included (but seriously, use a 3/4 wrench, armorer’s wrench, or JMW, not a screw driver.)