LMT reference to the weapon contracted by United Kingdom Ministry of Defense designated the L129A1. This reference weapon brings you as close as you can get to the true rifle system provided to the UK.LMT patented monolithic Modular Weapon System, MWS. The only true monolithic rail platform, milled from a single solid piece of aerospace aluminum forging. It utilizes two locking bolts accessible from the side of the receiver to lock in the barrel extension. This patented technology engages the barrel extension for a full 360 degrees around the extension and makes the barrel removable within seconds with a return to zero of the same barrel. One receiver can utilize numerous barrels of varying length, material, and caliber. The CQBMWS upper receiver has 19.25″ of uninterrupted picatinny rail on the 12 o’clock position. 9″ of picatinny rail on 3 and 9 o’clock positions with 7″ of rail at the 6 o’clock position. MWS barrels utilize a low profile gas block and straight gas tube. They possess proprietary coating and are cryogenically treated for long term durability. The LM308MWS lower receiver features our EDM machined two-stage trigger, ambidextrous magazine release and safety selector, endplate with QD swivel point, LMT ergonomic textured grip, and SOPMOD stock. As with all LMT lower receivers, the extension tube is coated with dry film lubricant.