LMT MARS-L SOPMOD Complete Lower Receiver

LMT MARS-L SOPMOD Complete Lower Receiver

The Lewis Machine & Tool MARS-L SOPMOD Complete Lower Receiver is a premium AR-15 foundation engineered for shooters who demand seamless ambidextrous control, refined ergonomics, and mission-ready reliability. Built on the advanced Modular Ambidextrous Rifle System (MARS-L), this complete lower delivers intuitive bilateral operation, allowing effortless manipulation of key controls from either side of the rifle.

Designed for compatibility with AR-15 pattern upper receivers chambered in 5.56 NATO and .300 Blackout, this system integrates a factory-installed two-stage trigger group, SOPMOD buttstock, ergonomic grip, and winter trigger guard—creating a fully equipped, ready-to-run lower assembly. The enhanced flared magazine well improves reload efficiency, while precision-machined ambidextrous controls provide smooth, consistent handling under pressure.

Fully Ambidextrous MARS-L Controls
Integrated selector, magazine release, bolt catch, and bolt release enable fast, intuitive operation from either side for enhanced adaptability.

Factory-Installed Two-Stage Trigger
Provides a crisp, controlled break with improved consistency for better shot precision and overall performance.

SOPMOD Buttstock System
Delivers enhanced cheek weld stability and ergonomic comfort while maintaining compatibility with standard AR-15 receiver extensions.

Enhanced Flared Magazine Well
Optimized geometry improves magazine insertion speed and reduces fumbling during reloads.

Ergonomic Control Package
Includes a comfortable pistol grip and winter trigger guard for improved handling in diverse environmental conditions.

QD Sling Integration
QD endplate allows secure and rapid sling attachment for flexible carry and weapon retention options.

Specifications

• Caliber Compatibility: 5.56 NATO / .300 AAC Blackout
• Controls: Fully Ambidextrous (Selector, Magazine Release, Bolt Catch, Bolt Release)
• Trigger: LMT Two-Stage Trigger Group
• Stock: LMT SOPMOD Buttstock
• Grip: Ergonomic Pistol Grip
• Trigger Guard: Winter Trigger Guard
• Endplate: QD Sling Endplate
• Magazine Well: Enhanced Flared Design
• Weight: 1.718 lbs
• Dimensions: 15.75 × 2.75 in