The patented LMT Monolithic Rail Platform, MRP™ upper receiver. The receiver and handguard are made from a single piece of forged aerospace 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-L QUAD 13.25 is the rifle length receiver designed for 14.5″ barrels up to 20″ barrels with quad rail at the 3, 6, and 9 o’clock positions.  This receiver sports 5 QD sling swivel attachment locations.

L7RA1A