This Umarex Walther PPK/S magazine has a magazine capacity of 13 BBs and it’s suited for 6 mm BBs. It features an external follower that can be pulled down manually to allow for easy loading of BBs. The fill port on the Walther PPK/S magazine by Umarex is located on the rear. It has a baseplate with a curved front side, that forms an extension of the PPK/S airsoft replica’s grip.