LMT Defense MARS-HS 7.62 NATO Large-Frame AR Pistol (SR-25/DPMS Pattern), 13.5 in Barrel, Monolithic Quad Rail, Ambi Controls, SB Tactical Brace
This LMT Defense MARS-HS AR pistol brings LMT's large-frame ambidextrous lower together with an MWS-style monolithic upper for a compact 7.62 NATO package. Notable features include a 13.5-inch threaded barrel with a three-prong flash hider, a slick-side upper without a forward assist, and a continuous T-marked Picatinny top rail. It is configured with an SB Tactical pistol stabilizing brace and includes a windowed 25-round Magpul PMAG.
Condition
Overall Condition: Excellent condition, showing only faint signs of any prior use or handling.
Bore Condition: Excellent - Clean, mirror finish, no signs of wear.
Bore Rifling: Excellent Rifling - Sharp lands and grooves.
Specific Condition Notes: There are minimal marks from prior handling and use on external surfaces. Please refer to the photos for a detailed look at the firearm.
What's Included
- Magpul PMAG LR/SR GEN M3 7.62x51 polymer magazine, 25-round, windowed
- SB Tactical pistol stabilizing brace (installed)
- LANTAC M-SPEC ejection port cover (installed)
The MARS-HS large-frame ambidextrous lower offers mirrored controls for both left- and right-handed shooters, including an ambidextrous magazine release and ambidextrous manual safety. The pistol is chambered in 7.62x51 NATO with a 25+1 capacity and uses a semi-automatic, direct impingement operating system.
The MWS-style monolithic upper is a single 7075-T6 aluminum unit that integrates the receiver and quad-rail handguard. Twin cross-bolts support LMT's quick-change barrel architecture, and the continuous T-marked top Picatinny rail with full-length lateral rails provides abundant space for accessories. The upper is slick-side, omitting a forward assist, and is fitted with a LANTAC M-SPEC ejection port cover.
The 13.5-inch threaded barrel is topped with a three-prong flash hider. The monolithic quad-rail handguard and receiver are built from 7075-T6 aluminum for durability. No iron sights are included, leaving the rail open for the user's preferred sighting solution.
Ergonomics are enhanced with an SB Tactical pistol stabilizing brace that is adjustable and includes a QD socket, along with a textured rubber pistol grip featuring finger grooves. Receiver markings include LMT Defense Eldridge, IA USA and patent numbers.




