Machined aluminum free-float forends provides an exceptionally positive, non-slip gripping surface for the support hand to help ensure maximum weapon control. Easy-to-install, two-piece free-float design eliminates handguard stress on the barrel that can compromise accuracy. Use with rifle's factory gas tube; if changing barrel length, purchase replacement gas tube of appropriate length. Rifle- and carbine-length models available in cobblestone-texture Overmolded rubber grasping surface. Mfg: Hogue SPECS: Forend Aluminum, hardcoat anodized, matte black, with synthetic rubber covering on Overmolded models. Rifle - 12¼" (31.1cm) long, 2" (5cm) diameter. Fits AR-15/M16 and clones with rifle-length gas system. Carbine 7-1⁄8" (17.8cm) long, 2"