LMT Defense offers premium firearms. Established as a first choice for end-users demanding exceptional performance when failure is not an option. All LMT weapon systems are tuned and built to withstand the harshest conditions around the globe.

LMT barrels are designed specifically to work with our patented Monolithic Rail Platform, MRP™ upper receivers. Manufactured with an emphasis on tolerance and fitment, each LMT barrel is tested for accuracy before it leaves the factory.

Discover a wide range of high-quality firearms at LMT Defense. Browse our extensive collection for reliable and precision-engineered firearms.

Lewis Machine & Tool Company (LMT®) was founded in 1980 to provide the US Military, law enforcement and government agencies with precision engineered, high quality weapons, new or replacement components and modular weapon systems.

LMT Defense: Explore our latest updates on state-of-the-art weaponry and innovative defense technologies for global armed forces.

The patented LMT Monolithic Rail Platform (MRP) upper receiver is the only AR-15 upper that incorporates the handguard and receiver as one component.

The LMT Modular Ambidextrous Rifle System MARS™, is a true fully ambidextrous system – featuring a left and right sided safety selector, mag release button, bolt release, and bolt catch. All MARS rifles feature a robust Monolithic Rail Platform, MRP™ upper receiver.

Feb 23, 2025 · LMT Defense (Lewis Machine & Tool Company) is a premiere manufacturer of gas piston AR 15 type, .308 rifle, M203 grenade launchers, Suppressors and firearms accessories used throughout the United States and in over 45 countries around the world.

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Chambered in 40mm, LMT grenade launchers are globally recognized as the most reliable M203 platform in the industry. Large breech opening for the largest projectiles in a standalone platform. Available in multiple barrel length and mounting configurations.