LMT Defense MARS-LS 5.56 NATO 11.5″ Pistol

Posted: 08/26/2026

LMT Defense MARS-LS 5.56 NATO 11.5″ Pistol

The LMT MARS-LS delivers the premium construction and fully ambidextrous controls that have made Lewis Machine & Tool a respected name in professional-grade AR platforms. Chambered in 5.56 NATO with an 11.5-inch barrel, this pistol combines compact handling with a carefully selected group of premium upgrades.

LMT’s MARS-LS lower receiver provides ambidextrous controls for the safety, magazine release, bolt catch, and bolt release. As a result, shooters can efficiently operate the platform from either shoulder. The 11.5-inch configuration also keeps the firearm compact and maneuverable while retaining the familiar handling of the AR platform.

Additionally, a Geissele SSA-E trigger provides a refined two-stage trigger pull designed around precision and control. The Precision Reflex Gas Buster charging handle offers another premium upgrade to the operating system. Meanwhile, Magpul MBUS Pro sights provide durable, low-profile steel backup sights.

Includes Magpul MBUS Pro sights, Geissele SSA-E trigger, and Precision Reflex Gas Buster charging handle.

This LMT combines a highly regarded ambidextrous receiver with upgrades from several respected AR-component manufacturers. Furthermore, the modifications complement the platform without taking away from the qualities that make the MARS-LS desirable.

Whether you’re searching for a premium compact AR or adding an upgraded LMT to your collection, this MARS-LS offers an excellent component package. Its combination of LMT construction, Geissele trigger, PRI charging handle, and Magpul sights sets it apart from a basic factory configuration.

MAGAZINE NOT INCLUDED

Ships to FFL.

Specifications:

  • Action: Semi-automatic
  • Caliber: 5.56 NATO
  • Capacity: N/A
  • Barrel Length: 11.5 Inches
  • Finish: Black