MGI offers a modular weapon system, the Hydra Carbine. Constructed on the M16/M14 platform, it features a patented quick-change barrel system (QCB). Its modular lower receiver, when coupled with the QCB, enables an officer to quickly choose whatever caliber is needed in a given tactical situation. The platform has change-out magazine wells. One can accommodate 5.56 mm and Beowulf .50. The other 7.62 by 39mm, may also be used with 6.5 Grendel, 3.08 NATO and 6.8mm SPC. MGI envisions using 10 calibers on the same platform, including such calibers as 9mm .40 S&W and .45 ACP. Without tools, the carbine can be switched to Beowulf .50 to penetrate body armor, or employ the system as a sniper asset by switching to a Grendel 6.5.