The Strike Industries AR-15 .223/5.56 Crush Washer Black 10pk is an essential component for firearm enthusiasts looking to ensure a secure fit for their muzzle devices. Designed specifically for AR-15 rifles these crush washers provide a reliable seal to prevent gas leakage and ensure optimal performance. Each pack contains ten washers all crafted with precision to meet the demands of high-performance shooting. Their sleek black finish not only enhances the aesthetic appeal of your rifle but also offers corrosion resistance for long-lasting durability. Ideal for gunsmiths and DIY enthusiasts these crush washers are a must-have for maintaining and upgrading your AR-15 platform.