Description
This is a serialized firearm and must ship to a licensed FFL for transfer. Add your dealer’s information at checkout, or contact us and we will coordinate it.
Lewis Machine & Tool build rifles to military and law enforcement contract standards. The MARS platform uses their monolithic upper receiver and rail rather than a handguard clamped to a separate receiver.
Built on LMT’s patented Monolithic Rail Platform (MRP) – the only true monolithic rail platform, milled from a single solid piece of aerospace aluminium forging. Two locking bolts, accessible from the side of the receiver, lock in the barrel extension. This patented arrangement engages the barrel extension for a full 360 degrees and makes the barrel removable within seconds, returning to zero with the same barrel. One receiver can run numerous barrels of varying length, material and calibre.
The upper receiver carries 14.5 inches of uninterrupted 1913 Picatinny rail at the 12 o’clock position. The remaining seven sides provide M-LOK attachment points.
Monolithic rail platform barrels use a low profile gas block and a straight gas tube. They carry a proprietary coating and are cryogenically treated for long term durability.
In the box
- Three grip panels
- One magazine
- Owner’s manual
The MARS-L ambidextrous lower receiver carries LMT’s ergonomic textured grip and SOPMOD stock. The ambidextrous controls cover the bolt catch, magazine catch and safety selector. As with all LMT lower receivers, the extension tube is coated with dry film lubricant.
Specification
- Caliber: 5.56 NATO
- Barrel: 16″
Arizona residents: this item passes through our Chandler shop on its way out, so you are welcome to collect it here instead and avoid the shipping charge. Choose local pickup at checkout and we will arrange a time.










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