This is the ProMag HK VP9, P30 9mm 17-round magazine. 

There are many compatible magazines out there for the HK VP9 and P30, but few are as durable as these from ProMag.

The heat-treated steel body features a corrosion-resistant finish, so you never need to worry about shooting in any conditions. Inside, a high-impact polymer follower and high-tensile music wire deliver the reliability to match. 

Side-facing witness windows are strategically placed to allow you to quickly and easily assess your remaining capacity, and each magazine is made right here in the USA. What else could you ask for?

While they are still in stock, add a few of these HK VP9 magazines to the cart before you checkout.