Product DescriptionThe Aim Sports ACWA2 Crush Washer pack is designed for AR-10/LR style rifles in .308 Win to help ensure proper attachment and timing (indexing) of common muzzle devices such as flash hiders and muzzle brakes. Built from steel and sized to fit most barrel profiles, these crush washers compress as you torque the muzzle device to achieve correct alignment. Each pack includes 12 pieces for convenient spares or multiple builds.Product Highlights Steel AR-10/LR crush washers designed to help achieve proper muzzle device indexing Supports correct installation of flash hiders and muzzle brakes on .308 Win AR-10 platforms Fits most barrel profiles for broad compatibility across AR-10/LR builds 12-piece value pack-ideal for armorers, builders, and maintenance spares Helps provide a secure, properly timed muzzle device attachmentSpecs Brand: Aim Sports Manufacturer Part Number: ACWA2 UPC: 815879013927 Product Type: Crush washer (muzzle device timing/indexing washer) Firearm Fit: AR-10/LR Caliber: .308 Win Material: Steel Pack Quantity: 12 piecesDisclaimer: We strive to provide accurate and up-to-date product descriptions, specifications, and images; however, errors or omissions may occasionally occur. We are not responsible for any inaccuracies or discrepancies in the content provided. If you notice anything incorrect or unclear, please contact us so we can correct it. When in doubt, we recommend verifying details directly with the product's manufacturer.