I have for sale the quick attach version of the redi-mag system, works on a standard ar-15 magwell. This version can be tighten down so when you press the mag release itll dump the mag in the rifle and drop your secondary mag in your hand, makes for stupid fast reload for 3-gun comp, to releasing your aggression through shootin, this is the full enclosure type, so it'll withstand the elements. Asking $60 ftf and $67 shipped with insurance.