This is a 2 piece Muzzle Clip and Phantom Flash Hider for Saiga 7.62x39 and 223 Rifles. It allows you to put a muzzle brake on your rifle without any tools or machining. The clip slides over the top of your sight locking over the barrel and the Phantom brake threads onto the clip and locks up rock solid. Very simple to install without modifying your Saiga rifle