For the most precise and repeatable muzzle device alignment, look no further than the AccuWasher Gen 2 Muzzle Device Alignment system. Unlike conventional crush washers, this advanced mono-shim system is lathe-turned on both faces to guarantee a uniform circular thickness of .0001 inches, delivering exceptional accuracy and performance.Offers precise muzzle device alignment through external markings for straightforward identificationConstructed from high-strength steel, which is comparable to or exceeds the strength of barrel steel, ensuring reliable durabilityAccuWasher shims, characterized by their monolithic construction and substantial thickness, effectively resist deformation when subjected to heavy impact or bending loadsEliminates alignment issues associated with conventional shims, thereby preventing accuracy degradation even under harsh handling conditionsOffers superior protection against misalignment resulting from bumps, drops or impactsThe external markings provide the most straightforward and precise alignment system available in the marketEach shim is chamfered on one side to provide clearance for barrels with radiused thread shoulders