If I have a post banned AR with a pinned/welded muzzle brake on it, can I add a surefire warden on to it. I heard that it’s mass compliant as long as it’s on a P/W muzzle brake but wouldn’t that defeat the purpose of a P/W brake? Also was told the surefire warden isn’t a brake it’s just an attachment. I’m a little confused as to what makes it mass compliant