I am selling this rail because I have decided to do something else. AGAIN!! It is a GG&G GS-1 Fire System Rail ( flat ). This one is designed to blend in with the back of the receiver and is about 10.25" in length. It extends over the hand guard about 3". It is in new condition. I have only mocked it up on the rifle while waiting for the rest of the parts to arrive. The price is $70 shipped. I will accepted paypal, money order or cashiers check.