LMT MARS-LS 5.56 NATO Rifle Lewis Machine and Tools

Posted: 04/30/2026

LMT MARS-LS 5.56 NATO Rifle Lewis Machine and Tools

LMT MARS-LS 5.56 NATO Rifle Lewis Machine and Tools

The LMT MARS-L (Modular Ambidextrous Rifle System) 5.56 NATO rifle is a top-tier, fully ambidextrous platform featuring a 7075-T6 forged lower, a 16-inch 1:7 twist chrome-lined barrel, and an LMT two-stage trigger. The rifle utilizes a monolithic upper receiver. This rifle also features Geissele MK18 rails (16″) for enhanced, lightweight modularity, an adjustable Magpul butt, and a Geissele Super Semi-Automatic trigger.

Specifications:

  • Lower Receiver: MARS-L forged ambidextrous lower, featuring matched ambi bolt catch, release, and safety selector
  • Barrel: 16-inch, 5.56x45mm NATO, 1:7 twist, chrome-lined
  • Operating System: Direct Impingement (DI)
  • Upper Receiver: Monolithic rail platform (MRP), allowing for quick-change barrel capability
  • Rail System: Custom build featuring Geissele MK8 16″ rails in place of the standard quad or MLOK upper, noted for slim profile and M-LOK compatibility
  • Trigger: Geissele Super Semi-Automatic® (SSA®) Trigger
  • Stock/Grip: B5 Systems SOPMOD stock and LMT ergonomic grip
  • Muzzle Device: A2 flash hider
  • Weight: Approximately 7.1 lbs