LMT MARS-H SOPMOD Complete Lower Receiver

The Lewis Machine & Tool MARS-H SOPMOD Complete Lower Receiver is a precision-engineered foundation built for serious large-frame rifle performance on the LMT MWS® platform. Designed for demanding applications where power, control, and modularity matter, this lower receiver supports hard-hitting calibers like 7.62×51 (.308) and 6.5 Creedmoor when paired with compatible upper receivers.

At the core of its design is the advanced MARS™-H ambidextrous system, delivering full bilateral control of the selector, magazine release, and bolt catch/release for intuitive manipulation from either side. Combined with an integrated flared magazine well, this system enhances reload speed, improves handling, and ensures smooth operation under pressure.

Factory-equipped with a two-stage trigger group, SOPMOD buttstock, ergonomic grip, and QD sling endplate, this complete lower arrives ready for duty-grade or precision rifle builds. Purpose-built for compatibility with LMT upper receivers, the MARS-H SOPMOD lower delivers a rock-solid, mission-ready platform engineered for consistency, durability, and professional-grade performance.

Full MARS™ Ambidextrous Control System
Integrated selector, magazine release, and bolt catch/release provide seamless operation from either hand for maximum adaptability.

Large-Frame Caliber Capability
Supports powerful cartridges like 7.62×51 (.308) and 6.5 Creedmoor for precision shooting and extended-range applications.

Factory-Installed Two-Stage Trigger
Delivers a refined, consistent trigger break for improved shot control and accuracy.

SOPMOD Buttstock Integration
Enhances cheek weld stability and shooting comfort while maintaining a rugged, duty-ready profile.

Enhanced Flared Magazine Well
Optimized geometry assists with faster, more reliable magazine insertion during reloads.

QD Sling Endplate
Provides secure and convenient quick-detach sling mounting for flexible carry options.

Specifications

• Caliber Compatibility: 7.62×51 NATO (.308 Winchester) / 6.5 Creedmoor
• Controls: Fully Ambidextrous (Selector, Magazine Release, Bolt Catch/Release)
• Trigger: Factory Two-Stage Trigger Group
• Grip: Ergonomic Pistol Grip
• Trigger Guard: Winter Trigger Guard
• Stock Type: SOPMOD Buttstock
• Endplate: QD Sling Endplate
• Magazine Well: Integrated Flared Design