This is the ProMag HK MP5 9mm 40-round magazine.

Delivering an additional ten rounds over your factory MP5 magazine, this ProMag 40-round magazine is sure to please.  

ProMag is one of those aftermarket companies that you can count on to provide a magazine as reliable as the factory one. The injection-molded polymer follower and heat-treated chrome silicone spring work extremely well together to ensure your rounds are properly aligned and feed your firearm as quickly as you need them. 

A proprietary DuPont Zytel based polymer is used to construct the magazine body giving you peace of mind when putting the magazine through hard use. The material is not only tough but chemical resistant and performs well under extreme temperatures. 

Whether you plan to use your MP5 for home defense, as a truck gun, or plain old range fun, these ProMags will have you covered. Best of all, they are made right here in the USA!

Don’t settle for 30 rounds when you can have 40! Add a couple of these 40-round ProMags for the MP5 to your cart before checking out!