This is the Glock 17/34 Gen 5 magwell. 

If you’re looking to speed up your reloads, this genuine Glock magwell is exactly what you need.

Constructed from a lightweight and durable polymer, it does not throw off your Glock’s balance and can withstand some serious use. It installs in a flash and can be removed at any time, making it great for everything from competitions to the range. 

There aren’t many accessories that improve your shooting mechanics so easily and at such an affordable price like this magwell can.

Make sure to grab one before your next range trip and see the difference they can make for yourself!