This ultra light weight tactical fake (SBR) "Short Barreled Rifle" suppressor is a great finish for any custom AR-10. If you want the look of a short barrel and a suppressor but don't want to add length to your gun or live in a state where an extension of the barrel is not allowed, this is for you! It is 1.25" in diameter, and 5.75" long. It has a threaded end of 5/8x24, and it is finished in a protective matte black finish. Your 16" or longer standard AR barrel slides in and threads inside the opposite end. Fits over barrels of .74" thick or smaller, weighs about 8 oz. (gun & other parts sold separately)*Must have at least 6.75" in front of a gas block, bayonet lug or hand guard.