Designed for use with 1913 Picatinny railed hand guards, the Magpul RVG Rail Vertical Grip, Black MAG412BLK is a basic, light weight, costeffective vertical fore grip, Shape is ergonomically designed for use as a traditional vertical grip, It has also been optimized for use with the thumb break method of shooting as taught by Magpul Dynamics, Includes all mounting hardware plus a universal mounting rail for custom fitting to many factory plastic hand guards, Made in USA, Black Finish, SKU: TCLGR1464