NcSTAR NC Star VMKM3, Keymod Accessory Rail, Short, 3 Hole Make your scope work harder with Weaver's new Scope Mounted Picatinny Rail Adaptor Mount a mini red dot, flashlight or laser directly to your scope Crafted from aircraft-grade, 6061-T6 aluminum with a durable, black matte finish Two models are available, designed for 1-inch or 30mm tubes