LMT M203 40mm Grenade Launcher 12″ Barrel
Achieve the iconic military aesthetic and maximum projectile velocity with the official LMT (Lewis Machine & Tool) M203 40mm 12″ Barrel Assembly. Precision-built for military units, law enforcement agencies, and defense contractors, this full-length 12-inch barrel delivers the classic military profile while offering optimal gas expansion and trajectory consistency. Engineered for heavy-duty operational environments, it provides a trusted, duty-grade foundation for specialized breaching, illumination, and less-lethal engagements.
Precision-manufactured in the USA to rigorous military specifications, this authentic 12-inch barrel is designed for seamless use with LMT L2B1 rail-mounted receivers or classic LMP300E under-barrel receiver setups. Forged and machined from high-strength ordnance steel, it is built to handle extreme chamber pressures and severe recoil without failure. Upgrade your military-style launcher with genuine LMT quality engineered for flawless lockup and absolute mechanical reliability.
Features
12″ Classic Barrel Profile:Delivers the traditional full-length military look while maximizing projectile velocity, range capability, and trajectory consistency in the field.
Versatile Receiver Compatibility:Engineered specifically for seamless installation onto LMT L2B1 rail-mount receivers or classic LMP300E under-barrel receiver modules.
Military-Spec Ordnance Construction:Forged and machined from heavy-duty steel to handle intense pressures, heavy recoil, and high-volume deployment schedules without failure.
40mm Caliber Support:Standard 40mm chambering accepts wide-ranging tactical, signaling, breaching, and less-lethal ordnance options.
Authentic LMT Factory Component:Built by Lewis Machine & Tool to match exact military-grade tolerances, ensuring flawless lockup, mechanical reliability, and structural safety.
Duty-Grade Engineering:Precision-built in the USA to withstand harsh field environments, chemical exposure, and rigorous combat conditions.
Specifications
| Manufacturer | Lewis Machine & Tool (LMT) |
| Model | M203 40mm Barrel Assembly (12″) |
| Caliber | 40mm |
| Barrel Length | 12.0 Inches |
| Receiver Compatibility | LMT L2B1 Rail-Mount & LMP300E Under-Barrel Receivers |
| Included Components | 12″ 40mm Barrel Assembly |
| Excluded Components | Receiver and Sights (Not Included) |
| Regulatory Notice | All NFA rules apply (ATF approval required prior to installation) |
| Country of Origin | USA |
