ohhunt® M4 M16 AR15 Free Float Quad Rail Handguard with FSP Cutout - 12 inch

Four Picatinny Rails for the Installation of Flashlight, Laser and Red Dot Sight Scope and so on. This fore end uses a proprietary barrel nut that may be installed using a standard AR-15 armorer’s barrel nut wrench (sold separately). For AR-15/SR-15 based platforms only; not compatible with SR-25 variants. Shock Proof Can be Used on Real Fire Caliber. Type: AR-15/M16/M4 Quad Rail Handguard. Compatibility: For AR-15/SR-15 based platforms only, not compatible with SR-25 variants. Length: 12.12". Height: 2.3 inch. Width: 2.17 inch. Barrel Nut Inside Diameter: 1.2 inch. Barrel Nut Outer Diameter: 1.88 inch. Finishes: Matte. Materials: 6061 Aluminum Alloy. Rail Type: Picatinny Weaver. No. of Rails: 4. ⚠️Installation Notes: 1. Remove the barrel from the host weapon upper receiver, and remove old barrel nut assembly. 2. Hand-tighten the barrel nut onto the upper receiver threads. 3. Torque Barrel Nut to 30ft. lbs. or greater if necessary for gas tube clearance. Do not exceed 35 ft. lbs. *(Aluminum barrel nuts are much lighter than steel barrel nuts, but they also have a lower torque capacity. Over-tightening can cause thread damage.) *This MK12 installation of the handguard requires an Armors wrench or vice block.