This is the Hochul Magazine System by Remnants. The Hochul Mag, in honor of the first 3D printable magazine design, the Cuomo mag. Named after the wonderful governor of NY, Kathy Hochul, who banned 'ghost guns' in NY in 2022. This magazine is designed for an AR15 in 5.56/.223 (as well as 300 blackout and 50 beowulf) and is in part based on a gen 3 PMAG. All components are compatible with a factory gen 3 PMAG. The magazine is made up of a 10 round base component that allows for the fitment of +10, +20, +20 windowed and +30 extensions. The extensions slide onto the base component just as a base plate would slide onto a standard magazine. Either a standard base plate can be used or a ranger plate, which is looped on the bottom for easier removal from a plate carrier/chest rig. To allow for the extensions to be held in place when on the base component, two screws are screwed into the holes on the front area of the extensions to prevent them from backing out.