Better known as GIS Tactical, the Hungarian company GIS Technologies was at Black Sea Defense & Aerospace (BSDA 2014) in Romania this year. One of the items on display was their V-MAG Magazine Module Connectors. A variety of connectors exist for variations of length between magazines and angle. In the specifications guide (PDF) on their site, they even show the spare magazine used as a forward grip. The V-Mag connectors are made from Steel in Hungary and TENIFER® treated. The eight different variations are meant for use with Glock brand basepads.