Vector Optics Tri Rail Length: 137mm (5.4 inch) Weight (net): 160g (5.6 Ounce) Fit for all Colt and Bushmaster etc Series' carry handle with fast installation and release Made of full tough alloy aluminum in black matte finish Additional picatinny rails on two sides supporting the installation of laser sights and flashlights etc for tactical purpose (45mm length) "See-Through" type supporting you mechanical sight use
