Product Description The Ruger Radial Port Muzzle Brake is designed to help reduce felt recoil and muzzle movement on .223 Remington/5.56x45mm NATO firearms. Built from durable steel with a black oxide finish, this radial-ported brake installs easily on 1/2"-28 threaded muzzles and requires no crush washer or timing. Installation can be performed with an 11/16" open-end or crescent wrench, and Ruger recommends torquing the brake to 15-20 ft-lbs. Compatible with Ruger AR-556 rifles and other .223/5.56 firearms with 1/2"-28 muzzle threads, this muzzle device is made in the USA by Swan Manufacturing. Product Highlights Radial port design helps reduce recoil and muzzle rise for improved control and faster follow-up shots 1/2"-28 thread pattern fits many AR-15 and other .223 Rem/5.56 NATO threaded barrels No crush washer required-designed to install without timing for simpler setup Durable steel construction with a black oxide finish for corrosion resistance and long service life Made in the USA by Swan Manufacturing for Ruger Specs Brand: Ruger Manufacturer Part Number: 90486 UPC: 736676904860 Type: Muzzle Brake Caliber Compatibility: .223 Remington / 5.56x45mm NATO Thread Pattern: 1/2"-28 TPI Overall Length: 1.75 in Diameter: 0.75 in Material: Steel Finish: Black Oxide Recommended Installation Torque: 15-20 ft-lbs Tool Requirement: 11/16" open-end wrench or crescent wrench Country of Manufacture: USA Weight: 1.7 oz Disclaimer: 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.