Breech-loading 37mm flare launcher clamps securely to the bottom rail of any 7" or longer Picatinny handguard. Lets you use 5¾" U.S. Coast Guard approved flare, smoke, or gas rounds for field operations or training. A single push of the button quickly opens the launcher to remove a spent round and insert a fresh cartridge. STZ pushbutton cylindrical breech lock is far stronger than lever locks typically used on this type of launcher. 9" Launcher has pivoting tube that swings to the side for loading. 12" Launcher tube slides forward for rear feed. Mounting hardware and instructions included. Kaos Stock Systems allow you to take your existing rail mounted Havo Mfg: Spikes Tactical 6061 T6 aluminum, hardcoat anodized, and 1018 cold-rolled steel, oxide coated, black. 9" Launcher 91⁄16" (23cm) OAL, 5½" (14cm) tube length. 2 lb., 5 oz. (1kg) wt. 12" Launcher 125⁄8" (32cm) OAL, 9" (22.8cm) tube length. 2 lb., 14 o.