LMT MARS-H DMR-ARCA 6.5 Creedmoor Rifle 20" Barrel - 20 Rd

LMT MARS-H DMR-ARCA 6.5 Creedmoor Rifle 20" Barrel - 20 Rd

Dominate long-range engagements with the pinnacle of precision semi-automatic engineering: the LMT® Defense MRP-H 15.3″ M-LOK ARCA 6.5 Creedmoor DMR Rifle. Built around Lewis Machine & Tool's patented Monolithic Rail Platform (MRP™), this battle-grade marksman system is machined from a single solid aerospace aluminum forging, eliminating the structural weaknesses and optic deflection inherent in traditional two-piece handguard assemblies. Chambered in the inherently flat-shooting 6.5 Creedmoor cartridge, this Designated Marksman Rifle (DMR) bridges the gap between tactical carbine modularity and benchrest-grade ballistic precision at extreme distances.

Anchored by a match-grade 20-inch cryogenically treated stainless steel barrel, the MRP-H utilizes LMT's revolutionary quick-change barrel system, allowing operators to swap barrel lengths, materials, or calibers in seconds via two side-locking bolts with guaranteed return-to-zero. The 15.3-inch handguard features an integrated ARCA rail section at the rear for direct tripod and bipod mounting, surrounded by 7-sided M-LOK slots and 22 inches of continuous 12 o'clock Picatinny rail. Paired with the fully ambidextrous MARS-H lower receiver, an AXLE Precision two-stage trigger, and a fully micro-adjustable LMT DMR stock, this system delivers an uncompromising long-range shooting solution straight from the factory.

Features

Patented MRP™ Monolithic Upper Platform:
CNC-milled from a single solid piece of aerospace aluminum forging to provide an ultra-rigid chassis that eliminates handguard flex, protects zero retention, and withstands extreme operational abuse.

Two-Bolt Quick-Change Barrel System:
Engages the barrel extension for a full 360 degrees using two side-accessible cross-bolts, enabling barrel and caliber conversions in seconds with verified return-to-zero performance.

20″ Match-Grade Stainless Steel 6.5 CM Barrel:
Cryogenically treated and coated with LMT’s proprietary finish for maximum barrel longevity and heat resistance, featuring a 1:8″ RH twist, a low-profile gas block, and a durable straight gas tube.

Integrated Rear ARCA Rail & M-LOK Forend:
Combines 22 inches of uninterrupted 12 o'clock Picatinny rail with 7 sides of M-LOK accessory slots and a machined rear ARCA Swiss dovetail for rock-solid, direct-to-tripod positional shooting.

True Ambidextrous MARS-H Lower Receiver:
Engineered with mirrored ambidextrous controls—including bolt catch and release, magazine catch, and safety selector—built into a forged lower receiver with a dry-film lubricated buffer tube.

LMT AXLE Precision Two-Stage Trigger:
Delivers an exceptionally smooth take-up with a crisp, glass-like break and tactile reset, empowering marksmen to execute surgical trigger presses during high-stress or extended-range scenarios.

Fully Adjustable Precision DMR Stock:
Features tactile, tool-free dials for precision adjustment of comb height and length-of-pull (LOP), enabling tailored eye-relief alignment behind high-magnification precision optics.

Specifications