Leapers UTG Max Strength Quick Detach Covert Combat Forward Grip, Black - MNT-GRP003Q.p Unique knurled surface for more solid grip. Smart posi-lock cross bolt and spring tensioned locking plate with steel insert for more secure installation. Fully adjustable quick detachable lever to fit on any Picatinny/Weaver rail. Smart end cap with water-proof o-ring for 1 AA battery storage. Precision machined from aircraft-grade aluminum alloy. Extremely light-weight design for more optimal weight distribution.