The LMT MARS-H 7.62 Piston Rifle is a semi-automatic 7.62x51mm NATO (.308 Winchester) rifle from LMT that swaps direct impingement for a piston operating system. It pairs a 12.5-inch MRP-H M-LOK upper with an F-A piston bolt carrier group and a lightweight 16-inch chrome-lined barrel with a 1:10 right-hand twist. The upper and handguard are made from a single piece of aerospace-grade aluminum. The ambidextrous MARS-H lower brings an AXLE two-stage trigger and a SOPMOD stock. It is a clean-running .308 for shooters who want piston operation.

Key Specifications

• Chambering is 7.62x51mm NATO (.308 Winchester), a full-power round for reach and terminal performance.
• Barrel length is 16 inches, a lightweight chrome-lined chromoly barrel rifled at 1:10 right-hand.
• The operating method is piston, with an F-A piston bolt carrier group that keeps the action cleaner.
• The upper is a 12.5-inch MRP-H M-LOK design with 19.25 inches of Picatinny rail on top and M-LOK points on the other sides.
• The trigger is the AXLE two-stage design, which gives a clear break.

Frequently Asked Questions

How many rounds does it hold and what is included? LMT lists a 20-round magazine capacity, and the rifle comes complete with a magazine, an owner’s manual and three rail panels.

How is the barrel attached? The barrel is held in place by a proprietary locking system with two locking bolts accessible from the right side of the receiver, and a standard T-30 Torx bit is the only tool needed.

Buy the LMT MARS-H 7.62 Piston Rifle, 16-Inch Barrel

Piston operation, a one-piece rail upper and an ambidextrous lower make this MARS-H a different kind of .308 carbine. Order it from our Lubbock, Texas gun shop for fast, insured shipping to your FFL, and see more AR rifles while you are here.