Russian AK-47 KeyMod™ is a 2-piece, drop-in style design, machined from 6061 aluminum and anodized for hard use. Featuring a Picatinny 1913 top rail with a grenade sight cut out. Mounts with unique barrel and receiver clamps while featuring 9 KeyMod™ rows for ultimate modularity. No gunsmithing or modification required for installation. 7.5" long x 1.6" wide x 3" tall.