Product Description The LanTac DragonA(R) muzzle brake (DGN556B) is engineered for AR-15 platform rifles chambered in .223 Remington/5.56 NATO to help improve control during rapid strings of fire. Built from hardened mil-spec steel and finished in nitride, it uses LanTac&';s Short Energy Pulse system to reduce perceived recoil and muzzle rise by managing the timing and direction of gas release. Each brake is serial-numbered for quality control and includes an appropriate crush washer for installation on 1/2x28 threaded barrels. Product Highlights Short Energy Pulse design helps reduce recoil and muzzle climb for faster follow-up shots 1/2x28 right-hand thread pitch for common .223/5.56 AR barrels Hardened mil-spec steel construction with durable nitride finish Serial-numbered for quality control; includes crush washer for timing Precision-machined muzzle device for AR-15, M16, and M4 rifles Specs Brand: LanTac USA LLC Model: Dragon Product Type: Muzzle Brake Caliber Compatibility: .223 Remington / 5.56 NATO Thread Pitch: 1/2x28 UNEF, right-hand Material: Hardened mil-spec steel Finish/Color: Nitride, Black Overall Length: 2.570 in Body Diameter: 0.866 in Weight: 3.2 oz Included: Crush washer Manufacturer Part Number: DGN556B UPC: 820103732611 Country of Manufacture: USA 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.