Guntec Air-Lok Handguard Features The GunTec Air-Lok 5 M-LOK Handguard uses a compression freefloat design that slides directly over the included barrel nut and is drawn down tight with four screws. This method creates a secure monolithic style connection between the handguard s continuous 1913 top rail and the upper receiver improving optic and accessory zero retention. Machined from aluminum the handguard keeps the barrel free floating for improved accuracy while still providing a rigid mounting platform. Triangle cutouts spaced throughout the rail reduce overall weight without sacrificing structural strength. At just 5 inches long this handguard suits a short barreled or pistol length AR-15 build where a compact rail is needed. The matte black finish matches common AR-15 hardware for a uniform look once installed. Because the barrel nut ships with the handguard a builder does not need to source a separate compatible nut before installation. Made in the USA this handguard is a solid choice for anyone building a lightweight short profile AR-15 at GrabAGun. Guntec Air-Lok Handguard Specifications Manufacturer: GunTec Model: Air-Lok Handguard Material: Aluminum Color: Black Length: 5 Compatible Hosts: AR-15 Available At: GrabAGun