The Magpul Barricade Stop is a rugged hand stop that allows the shooter to brace their firearm off barricades or field expedient shooting rests to create a stable platform for more accurate shots. The Barricade Stop is constructed of a polymer body that s fit with a hardened, QPQ-treated steel plate insert. The steel plate is heavily textured for aggressive contact with your shooting rest. It s also slightly curved for optimized contact on uneven surfaces, giving you the ability to pivot your firearm while maintaining contact and control. Compatible with octagonal M-LOK Handguards. Made in the USA. Attachment M-LOK Slots Weight, w/ hardware 1.5 oz. Materials Polymer and QPQ ferritic nitrocarburize finished steel Dimensions : 1.77L x 1.03W x 1.2H in. (over rail surface) Color Black