LMT MARS-LS 556 Nato Piston MLok Handguard Ambidextrous AR-15

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Note: this rifle comes with a Griffin Armament maritime receiver extention, H2 buffer, and appears to have a BCM PNT trigger.


MLC Upper Receiver | Ambidextrous Charging Handle |

S-A Piston Bolt Carrier Group | MARS-L Lower Receiver |

16″ 5.56×45 (.223) Chrome Lined 1:7″ RH Twist Piston Barrel

This weapon is built with the LMT® patented Monolithic Rail Platform, MRP®. 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 MLC upper receiver has 14.5″ of uninterrupted 1913 picatinny rail on the 12 o’clock position.  The remaining 7 sides provide M-LOK compatible attachment points.

Monolithic rail platform piston barrels utilize a standard/suppressed option gas block with removable piston rod and spring.  They possess proprietary coating and are cryogenically treated for long term durability.

The MARS®-L ambidextrous lower receiver features our endplate with QD swivel point, LMT® ergonomic textured grip, and stock.  The ambidextrous features include bolt catch and release, magazine catch, and safety selector. 





7.404 lbs


33 × 2.75 in




Barrel Length



Rifling Twist Rate






Handguard Style



Magazine Capacity



Operating Method






MARS Caliber


Categories: Semi Auto Rifles
Condition: Used
Manufacturer: Lewis Machine Tool LMT
Model: MARS-LS
Vendor: Gunprime
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