This is the Tyrant CNC HK VP9, P30, VP40 +5 magazine extension. 

Adding capacity to your HK VP9, P30, or VP40 has never been quicker or easier!

CNC machined from aerospace-grade aluminum, this extension not only has a flawless finish but provides superior durability. The added weight causes your magazine to drop with little to no effort, making it a huge asset for the range and reloading drills. 

Featuring retention plunger technology, you’ll be able to install it within seconds with no tools necessary. On top of it all, they are made in America and backed by a lifetime warranty!

Note: this extension does not work with 10-round magazines or ones with red/orange followers.

What are you waiting for? Add a couple of extensions to your cart and upgrade all of your HK mags!