US Patent 11209233 Muzzle device mounting system

A muzzle device mounting system having an outer collar; an inner collar attached or coupled to the outer collar, wherein the outer collar is in a fixed rotational position relative to the inner collar; a muzzle device positioned at least partially between the inner collar and the outer collar, wherein the muzzle device is rotatable relative to the outer collar and the inner collar; and a pawl lever pivotably positioned relative to the outer collar and the inner collar, wherein the pawl lever includes an engagement surface for engaging one or more splines of a muzzle adapter, and wherein the pawl lever is slidable relative to the outer collar and the inner collar along a longitudinal axis of the outer collar and the inner collar.