This plug is designed to fit into the back of the lock recess between CF20 magazines. When used with just a single magazine coupler (to allow the coupled mags to fit in single mag pouches) this stops the magazines from being able to rotate out of alignment with each other.
This item is 3D Printed.
If you buy magazines or magazine couplers from us we will send you them for free if you mention it in the order comments (one plug for every two magazines ordered or two with every set of couplers). Free ones may be any random color... ones ordered here will be either silver, red or black depending on what is available. You can request one of those color options but if your choice isn't available we can only ship what we have. Do not pay for these ones if you just want free with an order. Any of these paid for in an order will not be refunded because you meant to get the free ones instead. Only pay for them here if you want to, or want more, or are buying them without buying magazines or couplers from us.