LMT MARS-L 556 MRP

The LMT monolithic Rail Platform (MRP ) employs a patented design, crafted from a single-piece of aerospace-grade aluminum forging, representing the only true monolithic Rail Platform. It features two side-accessible locking bolts on the receiver securing the barrel extension with a 360 degree engagement. This innovative technology allows for rapid barrel removal and reinstallation, ensuring a consistent return to zero. The system supports multiple barrels of varying lengths, materials and calibers. The upper receiver is equipped with an 18-1/2 inches uninterrupted 1913 picatinny rail at the 12 o'clock position, while the remaining seven sides offer M-LOK compatible attachment points. The monolithic Rail Platform barrels a redesigned with a low-profile gas block and straight gas tube, featuring a proprietary coating and cryogenic treatment for enhanced durability. The MARS-L ambidextrous lower receiver includes an LMT ergonomic textured grip and SOPMOD stock, with ambidextrous controls for the bolt catch, magazine catch and safety selector. Consistent with all LMT lower receivers, the extension tube is treated with a dry film lubricant.