The Vertical Coupler is an attachment for Magpul's PMAG Gen 3 that allows the user to attach two 10rnd magazines together end-to-end to increase reload speed and allow for more ammunition to be carried with the rifle.
The coupler replaces the standard baseplate of the magazine and snaps in place.
The coupler can be removed using a small screwdriver to depress the spring tab through the hole in the back.
