This is the Shield Arms PMAG GEN M3 AR-15 +5 magazine extension. 

Do you know what’s better than 30 rounds? Easy – 35 rounds!

Thanks to these +5 magazine extensions from Shield Arms, you can easily increase the capacity of any of your GEN M3 PMAGS. That means your 10-round magazines will hold 15 rounds, your 20-round magazines will hold 25 rounds…you get the idea!

Machined from billet 6061 aluminum, they are as durable as they come. And since they are designed to work with the OEM spring, they are quick and easy to install. 

The icing on the cake? They are proudly made in the USA and are backed by a lifetime warranty!  

Upgrade your Magpul PMAG GEN M3 magazines and maximize their capacity. Don’t forget to add a couple of these magazine extensions to your cart before checkout!