The A3 Industries AFG forend is designed specifically for the K and takes full advantage of all available space, following the contours of the MP5K magwell. The result is an AFG that feels like part of the firearm. Short forends on compact pistols can sometimes place your wrist at an awkward angle, making it uncomfortable for the shooter. HK's answer on the MP5-K was the notorious HK vertical foregrip. If you don't want to stamp your gun or simply don't like the feel of a VFG, A3 has a solution that offers a very comfortable grip in a more ergonomic layout.