LMT MARS-H .308 / 7.62mm Stripped Lower Receiver

LMT MARS-H .308 / 7.62mm Stripped Lower Receiver

Build your custom large-frame precision rifle on the absolute gold standard of ambidextrous receiver design with the LMT Defense MARS-H Stripped Lower Receiver. Bringing the combat-proven innovations of Lewis Machine & Tool’s MARS-L system to the heavy-caliber MWS® platform, the MARS-H (Modular Ambidextrous Rifle System - Heavy) is purpose-built for .308 Win / 7.62x51 NATO, 6.5 Creedmoor, and .260 Remington builds. Forged from high-grade aircraft aluminum and finished in a resilient hardcoat anodize, this receiver provides an unyielding, ergonomic foundation for duty, competition, and precision long-range applications.

Engineered for seamless bilateral operation, the MARS-H features fully ambidextrous controls—including the selector switch, magazine release, and proprietary bolt catch and release mechanisms—machined directly into the forged receiver geometry. While designated as a "stripped" lower, it arrives from the factory with all essential ambidextrous control components pre-installed. Designed for guaranteed fit and function with LMT MWS upper receivers and compatible with standard AR-style trigger groups, the MARS-H lower receiver delivers unmatched operational flexibility and ergonomics.

Features

LMT MARS® Ambidextrous Control System:
Bilateral bolt catch and release, magazine release, and selector controls are machined directly into the receiver for fluid, instinctive operation with either hand.

Factory Pre-Installed Ambidextrous Hardware:
Ships as a "stripped" lower with all proprietary ambidextrous catch and release mechanisms fully assembled and factory tested.

Forged Aircraft Aluminum Construction:
Machined from ultra-durable aircraft-grade aluminum and finished in a rugged matte black hardcoat anodizing for extreme environmental resistance.

LMT MWS® Platform Compatibility:
Specifically designed for flawless lockup and feeding when paired with LMT MWS upper receivers across 7.62 NATO, 6.5 Creedmoor, and .260 Rem calibers.

Standard Trigger & Stock Interface:
Compatible with standard AR-15 / AR-10 match trigger assemblies, pistol grips, and receiver extensions for personalized build customization.

Specifications