LMT Piston


LMT Piston



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 EDM machined two-stage trigger, winter trigger guard, endplate with QD swivel point, LMT® ergonomic textured grip, and SOPMOD stock. The ambidextrous features include bolt catch and release, magazine catch, and safety selector. As with all LMT® lower receivers, the extension tube is coated with dry film lubricant.

This weapon system comes complete with magazine, owner’s manual, and 3 grip panels

Additionally, you may customize the rifle with added components, Cerakote, or different furniture at an added cost. Contact your local dealer or us directly for details.

Only available for purchase through Federal Firearms Licensed Dealers. All LMT® firearms can also be purchased with select-fire configuration for use by qualified agencies.


You must register to use the waitlist feature. Please login or create an account
SKU: CQBMLK16PS-MARS Categories: ,



Model Piston
Caliber 5.56×45
Operating Method Piston
Weight (empty) 7.404 Pounds / 3.36 Kilograms
Magazine Capacity 30 Rounds
Barrel 16 in / 406 mm – Chrome
Rifling 1:7″
Selector Safe/Semi
Trigger Two Stage
Color Black, Burnt Bronze, Flat Dark Earth, OD Green, Titanium Gray

As one of the most trusted names in the firearm industry LMT, Lewis Machine & Tool Company, has been in business for 40 years and providing top-quality American-made weapons to law enforcement, military, and government agencies, hunters, commercial retailers, and recreational practice. LMT produces a full line of accessories and weapons fabricated specifically for all types of environments from urban to desert combat. Their main business goal is to surpass the expectations of not only customer service but quality and price as well.

LMT has received many awards and accreditations like the Illinois Quad City Small Business Government Procurement Award for Excellence in State and Federal Government Procurement, United States Army Armament, Munitions and Chemical Command Award for Contractor Excellence of Loyal Support and Contributions to the Readiness of the Us Armed Forces (Oct., 1991-Sept. 1992), Us Army Material Command for Outstanding Achievement in Value Engineering (1994), and the Committee of Small Arms Producers (Apr. 1997-Feb. 2001)

The CQBMLK16PS-MARS is one of our most popular models for its sleek design, customizable options, and superb technologies. The use of the patented Monolithic rail platform utilizes a standard/ suppressed option gas block with the removable piston rod and spring. The universal functionality of the ambidextrous charging handle makes this the perfect fit for any large groups like law enforcement and military teams. These universal features include bolt catch and release, magazine catch, and the safety selector.

There are also many customizable features of the CQBMLK16PS-MARS which are offered at an additional charge. Contact us for more information on ways that you can customize many of the components of the CQBMLK16PS-MARS like different furniture or the Cerakote-which is great for keeping your weapon from getting scratched up and is a great protective coating for keeping the parts functioning correctly and lasting longer.


Additional information

Shipping Weight 208 oz
Shipping Dimensions 39 × 10 × 4 in