RJK Ventures LLC is a specialty online retailer serving the firearms community with our patented Armory Racks® product line and our patent pending MAG|Coupler™ products. Established in 2011, RJK Ventures LLC, we design and manufacture products for collectors, enthusiasts and dealers of firearms. Armory Racks are a patent-pending high-density space-saving solution for handguns. The racks are designed to allow in-place pistol removal and replacement in tight storage spaces like safes, where space is precious and expensive. MAG|Couplers simply replace the floorplate of your existing magazine allowing for the connection of two like magazines back to back.