UTG 2-Piece Drop-In Mid-Length Picatinny Rail AR-15 Mount 9 Inch

FEATURES
-8.68"L x 2.44"W x 2.44"H
-Clever top/bottom 2-piece design with integral spinal cords/alignment housing for great fit
-Designed with innovative alignment tabs at the front for perfect fit with the standard triangular front cap
-Fits middle length Model 4/15
-Includes 4 Picatinny rails each with 18 continuous slots
-Great zero-retention capability for all accessories installed on the rails
-Easy installation with no modification to the barrel
-Black rubber rail guards included
-Proudly made in the USA