Description Designed as part of an integrated system the Gen-3 Hand Guard offers greater levels of functionality, modularity, and durability. The co-planar top rail keeps all accessories such as optics, night vision, or thermal devices properly aligned. For additional functionality the Gen-3 handguard is also M-LOK compatible. Ample ventilation holes assure the quickest cooling and minimize weight. Picatinny Rail Fits AKM type stamped receiver rifles with standard smooth front trunnion. Includes barrel clamp for standard barrel diameter of .670" +/- .010" as measured 1/4 inch before rear sight block Will not fit Yugo, milled receiver, or bulged front trunnion typ Mfg: Texas Weapon Systems