This is the Desert Tech Quattro 5.56/.223 53-round magazine. 

This unique quad-stack magazine from Desert Tech is specifically made for use with the Quattro-15. You read that correctly…a quad-stack magazine! 

Constructed from a durable polymer, the QUADMAG-53 delivers you a whopping 53-round capacity. Not only does it provide you with more capacity, but it delivers superior reliability. 

It utilizes a single follower and spring, which makes it less apt to fail during normal and suppressed shooting. There are also side-facing round count indicators that allow for quick capacity analysis. 

Whether you’re using your Desert Tech Quattro-15 for home defense, range time fun, or as a truck gun, having a few extra QUADMAG-53s will ensure you’re prepared with a full 210-round loadout. 

If you have a Quattro-15, make sure to add a few extra magazines to your cart to keep the fun lasting longer! Those rounds will go quickly!