$29.99This internal safety slide replaces the cheap cast aluminum one that came with your M-11/9 or M-11A1. It is designed to have more bearing surface and is made from steel with a black oxide finish. The picture to the left shows the original safety slide on the top and the new and improved Lage Mfg. steel safety slide on the bottom. The picture clearly shows how the original aluminum safety slide can become warped and battered.