Scope Rail Mount for MP5 MK5 M5 style guns NCStar Fits most MP5, MK5, and M5 Real Steel and Airsoft Guns. Instantly add a top rail mount to your close quarters weapon. No drilling required. (Gun and Scope not included). Mil Spec: Metal Construction Matte Black Weaver style rail clamps directly to top of receiver Weight: 2.53 oz Length: 4.96" NCSTAR LIFETIME WARRANTY!