ULTIMAK YUGO SERIES M-9

Replaces gas tube. Clamps directly to barrel for maximum stability and accuracy. Solid, one-piece 6061-T6 hard anodized aluminum body. Comes with 4140 steel clamps, screws, allen wrench, and instructions. No Gunsmithing installation. Overall length: 7.515 inches Patented Model: M9 ADD AN AIMPOINT 30MM LOW RING FOR COWITNESS