LMT MRP Rifle Picatinny Quad Rail 13.25″ Upper Receiver Chassis The patented LMT Monolithic Rail Platform, MRP™ upper receiver. The receiver and handguard are made from a single piece of aerospace grade aluminum. The barrel is held in place with a proprietary locking system that utilizes two locking bolts accessible from the right side of the receiver. The only tool needed is a standard T-30 Torx bit to tighten the bolts. This receiver requires the patented LMT monolithic barrel assembly which has a low profile gas block with straight gas tube. The MRP 13.25″ is the rifle length receiver designed for 14.5″ barrels up to 20″ barrels with 1913 picatinny rails on all four sides. This receiver sports 4 QD sling swivel attachment locations. Barrel not included.
