LMT Defense - MARS-L DMR Complete AR15 Lower Receiver - M7DM4
LMT DefenseThe LMT Defense MARS-L DMR Complete AR15 Lower Receiver (M7DM4) is purpose-built for designated marksman rifle (DMR) configurations. The LMT® Modular Ambidextrous Rifle System (MARS®) lower receiver sets a new standard for ambidextrous AR-15 controls. The MARS-L features fully ambidextrous selector, magazine release, bolt catch, and bolt release — all machined directly into the forged aluminum receiver for maximum durability. The enhanced flared magazine well enables fast, positive magazine insertion even under stress or with gloves.
The DMR configuration comes complete with LMT's two-stage trigger group for a crisp, precise break ideal for accurate semi-auto fire — combined with the MARS ambidextrous controls for maximum operator flexibility. Includes enhanced buttstock for solid cheek weld and repeatable sight alignment. The DMR lower pairs perfectly with LMT's 16"–20" stainless steel or chrome-lined barrels for a precision-ready DMR build. Compatible with 5.56×45 and .300 BLK.
Included Components
- LMT MARS® fully ambidextrous controls (selector, mag release, bolt catch/release)
- LMT two-stage trigger group — precision DMR trigger
- Enhanced flared magazine well
- DMR buttstock configuration
- Caliber: 5.56×45 / .300 BLK
- Forged aluminum — Type III hard anodized
- Made in USA by Lewis Machine & Tool