Enhance your firearm setup with GrovTec's 308 Cal Black Nitride Crush Washers. Engineered for durability and precision these washers ensure a secure attachment for muzzle devices. Crafted from high-quality steel they feature a sleek black nitride finish that adds both functionality and a professional look. Each pack contains five washers designed with a 5/8"-24 tpi specification making them a reliable choice for firearm enthusiasts seeking quality and performance.