Product DescriptionThe Battle Arms Development THUMPER muzzle brake is engineered to help keep your rifle tracking flatter by reducing felt recoil and mitigating muzzle rise. Built from durable 17-4 stainless steel with a stainless finish, this .22 caliber muzzle device uses standard 1/2x28 threading for common .223 Remington/5.56 NATO applications.Product Highlights THUMPER muzzle brake design helps reduce recoil and muzzle flip for faster follow-up shots Precision-machined 17-4 stainless steel construction for strength and corrosion resistance 1/2x28 thread pitch fits many .22 caliber/.223/5.56 threaded barrels Stainless steel finish for a clean, durable appearance Crush washer not included (per manufacturer listing)Specs Brand: Battle Arms Development Product Type: Muzzle Brake Caliber: .22 Cal (.223/5.56 class) Thread Pitch: 1/2x28 Material: 17-4 Stainless Steel Finish: Stainless Steel Approx. Weight: 2.5 oz (manufacturer listing) Crush Washer Included: No Manufacturer Part Number: BAD-THUMPER-223-SS UPC: 810033781865Disclaimer: 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.