The double-action trigger allows the operator to safely re-strike a misfired cartridge without having to open the breech to re-cock the firing mechanism. The Mark III design has evolved, through extended technical firing and operator testing, into a launcher of reduced overall weight and size, with safety functions similar to those of the host weapons. The launcher can be quickly mounted on any weapon (C8/M4, C7/M16 series) that provides a bottom MIL-STD mounting rail with recoil lug. Or, for maximum operational flexibility, it may be equipped with a stand-alone buttstock. Once mounted the launcher is secured to the rail by two captive, lateral pins. The EAGLE side-loading launcher is uniquely ambidextrous (patent pending). The operator can readily reconfigure the side-opening feed, sight mounting and sling attachment to either the left or right side, without any special tools. The EAGLE is able to fire all 40x46mm Low Velocity ammunition. It is equipped with an ejector that will partially eject spent cartridges when the breech is opened. The barrel is also provided with a relief on each side that will allow manual extraction. The EAGLE is designed to allow the operator full operational capability from prone, kneeling, sitting, and standing positions, whether in the stand-alone mode or mounted to the MIL-STD rail of an individual weapon. This design is compatible with all environmental and NBC equipment.