The Lewis Machine & Tool MARS 308 Piston rifle is a semi-automatic platform chambered in .308 Winchester (7.62×51 NATO) with a 16-inch chrome-lined, lightweight barrel featuring a 1:10 right-hand twist. It utilizes the LMT Monolithic Rail Platform (MRP-H), where the upper receiver and handguard are machined from a single piece of aerospace-grade aluminum. The barrel is secured with a proprietary two-bolt locking system accessible from the right side of the receiver, requiring only a T-30 Torx bit for removal or installation.

The rifle incorporates a piston-driven operating system with an F-A piston bolt carrier group and a MARS-H ambidextrous lower receiver. The upper receiver provides 19.25 inches of Picatinny rail along the top with M-LOK compatible slots on the remaining seven sides for accessory mounting. Ambidextrous controls include the bolt catch and release, magazine catch, and safety selector. Additional lower receiver features include the AXLE two-stage trigger, winter trigger guard, QD endplate, textured grip, and SOPMOD stock. This rifle is in new condition.

Included components consist of the complete LMT MARS-H lower and MRP-H upper assemblies configured for the 7.62×51 piston system. The receiver extension tube is coated with dry film lubricant for consistent operation. The design emphasizes modularity through the monolithic upper and quick-change barrel interface, allowing straightforward maintenance or caliber conversion using compatible LMT barrel assemblies.

Call 954-501-9870