Description

The LMT MARS-L CQB 10.5″ 5.56 Quad Rail SBR is a short-barreled rifle chambered in 5.56 NATO that combines a compact profile with the modularity of Lewis Machine & Tool’s Monolithic Rail Platform (MRP). The one-piece aerospace-grade aluminum upper receiver features a 9.25-inch quad rail with continuous 1913 Picatinny rail sections for mounting optics, lights, lasers, and other accessories. Its 10.5-inch chrome-lined barrel utilizes LMT’s quick-change barrel system, allowing compatible barrel assemblies to be removed or installed using two locking bolts while maintaining the rigid monolithic receiver design.

The MARS-L forged ambidextrous lower receiver includes fully ambidextrous controls for the safety selector, magazine release, bolt catch, and bolt release, making the rifle adaptable for both right- and left-handed shooters. Additional features include an AXLE two-stage trigger, SOPMOD stock, G2 pistol grip, enhanced trigger guard, ambidextrous charging handle, and a standard M16-pattern full-auto bolt carrier group. The rifle ships with one magazine and an owner’s manual.

Specifications

Caliber: 5.56 NATO
Barrel Length: 10.5 in
Barrel Construction: Chrome-Lined
Barrel System: MRP Quick-Change Barrel
Twist Rate: 1:7
Gas System: Carbine-Length
Operating System: Direct Impingement
Finish: Black Anodized
Upper Receiver: Monolithic Rail Platform (MRP) Quad Rail
Rail Length: 9.25 in
Rail Interface: Full-Length 1913 Picatinny Top Rail with Three Additional Picatinny Rail Sections
Lower Receiver: MARS-L Forged Fully Ambidextrous
Bolt Carrier Group: Standard Full-Auto M16 Pattern
Trigger: AXLE Two-Stage
Charging Handle: Ambidextrous
Muzzle Device: A2 Birdcage Flash Hider
Stock: LMT SOPMOD
Grip: LMT G2 Pistol Grip
Trigger Guard: Enhanced