Aim Sports Crush Washer 308 Win AR10 Steel 12 Pack is a must-have for firearm enthusiasts. Designed to fit most barrel profiles these crush washers ensure precise indexing of your flash hider or muzzle brake for optimal performance. Made from durable steel with a sleek black finish this pack of 12 provides a reliable and cost-effective solution for all your AR10/LR .308 needs. Perfect for secure and efficient muzzle device installation this essential accessory is built for lasting durability and efficiency. Upgrade your gear with Aim Sports Crush Washer for precision and reliability.