A quick attachment coupling system to attach tactical or tool accessories, providing the ability to interchange accessories on the fly, which can be modified to fit or be integrated to the magazine base of a pistol, the fore-end of a long gun, the exterior of wearable tactical gear, or any other supporting structure. The coupling system includes a dock. Each accessory tool is fitted with a tang which slides into a tang slot in the dock where it is automatically secured for use by a spring-loaded lock switch. A core plug in the tang slot holds the lock switch in an unlocked position when the accessory tool is uncoupled from the dock.