FLARE LAUNCHER LMT Defense 37MM M203 Flare Launcher If you're looking for a replica 40MM launcher with the exact function and feel of the original military specification M203, look no further! The LMT 37MM Flare Launcher is as close to the destructive device as a civilian can get without ATF approval and licensing. Fully functional to shoot 37MM ammunition with authority from both M4 and M16 type AR's. Compatible with standard LMT mounting hardware and handguards, assembling your throwback or replica weapon system has never been easier or more accurate. At LMT we went to great lengths to give customers a high quality, direct representation of the real M203, BECAUSE F Mfg: Lmt Defense