CORE ELITE OPERATIONS 5.56 NATO/9MM SUPPRESSOR READY MUZZLE BRAKE FOR AR-15 Core Elite Operations A15 Threaded Muzzle Brake — 5.56/9mm | Suppressor Ready The A15 Threaded Muzzle Brake is engineered for shooters who demand both immediate recoil mitigation and seamless suppressor integration. Precision-machined from 4150 hardened steel and finished in black nitride, the A15 delivers durable, consistent performance across sustained firing. External 1×16 LH threads with precision chamfering allow direct mounting to suppressors from leading manufacturers including CAT, CGS Group, and Apparition Instruments — no adapter required. Designed and manufactured in the USA. SPECIFICATIONS Muzzle Thread: 1/2×28 TPI Bore size: .36” Exterior Suppressor Thread: 1×16 LH Material: 4150 Hardened Steel Finish: Black Nitride Compatible Suppressor Manufacturers: CAT, CGS Group, Apparition Instruments See all of our AR15s and AR15 parts here.