Built to military specifications for the M16/AR15. The M44 incorporates 4 mounting rails allow the use of any accessory with a Picatinny or Weaver® base, including lasers, lights, optics and bi-pods. The operator will not notice additional bulk or weight as the rails are designed to be an integral part of the handguard. "Thermal rubber rail covers (4 Included) enhance the operator’s grip and protect the rails when not in use." A metal heat shield dissipates the high temperatures produced during sustained rapid fire sequences. Available in rifle and carbine lengths. No tools or gunsmithing required for installation. Fobus AR-15 4 Rail Handguard system 111$134.50 Buy Gun Holsters global distributors focused on Military & Police Supplies. Renowed manufactures include Blackhawk Industries, Galco, Gould&Goodrich, Don Hume, Fobus, Sreamlight, ASP, Helstorm, Hydrastorm, Hogue, Original S.W.A.T. Tactical Footwear, Bianchi, Hatch Gloves, 5.11 Tactical Series, and multiple product lines.