The Unity Tactical VFG is the perfect size Vertical Fore Grip for M-LOK and Tubular rails with 1/4 - 20 threaded inserts. Its 360 degree sloping sides provide increased grip ability from all angles. It excels when used as a hand stop, but can also be employed as a straight vertical grip. Weighing in at less than 1.5oz, the Unity Direct-Mount Vertical Fore Grip is lightweight, low profile, and integrates directly to most M-LOK and tubular/slick rails. The unique shape creates a seamless grip flow from rail to VFG. Mfg: Unity Tactical