#html-body [data-pb-style=FJLEX4F],#html-body [data-pb-style=GVUFCU4],#html-body [data-pb-style=W860TLF]{justify-content:flex-start;display:flex;flex-direction:column;background-position:left top;background-size:cover;background-repeat:no-repeat;background-attachment:scroll} PATENT PENDING BCA manufactured muzzle brake designed specifically for the AR-10 and BC-8 calibers to reduce recoil by 40% (proven in testing) and provide a smoother shooting experience. Dimensions: 2.550 x 1.500 x 1.200 Thread Pitch: AR-10 5/8-24 BC-8 5/8-24 Material: 4150 Steel Coating: Parkerized It is the responsibility of the consumer to ensure all state, local, federal, and ITAR regulations are followed.