A factory Mossberg magazine for the 590M pump-action shotgun, holding 5 rounds of 12 gauge. The 590M was Mossberg's answer to the reload problem in defensive shotguns — instead of thumbing shells one at a time into a tube, you drop a box magazine and seat a fresh one, which is dramatically faster under pressure.

Double-stack construction and a robust polymer body keep the magazine compact for its capacity. Having spares on hand is what makes the magazine-fed concept worthwhile in the first place.

In stock and ready to ship straight to your door from Dawson Defense, an Arizona-owned licensed dealer.