Geissele – 13″ M4 HANDGUARD MK2 – BLACK

The Geissele Automatics Super Modular Rail Mark 2 is a free float rail system developed for the M4 and all Mil-Spec AR-15 variants . It features one fixed M1913 rail at the 12 o'clock position and allows for the included M1913 accessory rails (2 short, 1 long) to be mounted at the 3, 6, & 9 o'clock positions in any configuration that the shooter desires . Also included are two industry standard QD mounts to attach weapons slings . The SMR Mk2 is one integral piece machined from a semi-billet extrusion of aircraft grade aluminum to provide strength and rigidity . It attaches to the gun using a Geissele proprietary alloy steel barrel nut; included in the kit along with a combination wrench to remove the stock barrel nut and install the Geissele one . The Geissele barrel nut needs no indexing to the gas tube and is easily installed by just tightening the barrel nut to the specified torque value . Once the barrel nut is installed, the SMR Mk2 is easy to attach and remove with only two bolts attaching the rail to the barrel nut and two alignment screws used to index the rail to the rest of the gun .