Perfect for adding weight and balance to your rifle. - Adding weight to a rifle can cut down on recoil allow one to self-spot their shots and balance their rifle. These weights mount on to the exterior of any chassis or stock that is M-LOK compatible. They mount using standard hardware and M-LOK T-nuts meaning that you can install and remove them as necessary on your system. Each weight features a QD flush cup to accommodate a sling. - Fits any chassis or stock with M-LOK slots - Requires at least 2 slots per weight