Samson Weapon Mount Rails, Black for Sig 556, 4 Holes

"Samson Weapon Mount Rails, Black for Sig 556, 4 Holes. With four 1913 mil spec rails the two-piece Samson SIG 556 STAR features solid scope mounting for laser scopes weapon lights and any other shooting accessories you need. The rifle scope mounting base has a continuous 19 inch top rail.