Primary AirsoftANGLED Glock/AAP-01 HPA M4 ADAPTER

US HPA connection.

Compatible with PTS M4 Mags

The screw is standard length for Glock mags and it is possible if the magazine does not tighten wel on de adapter, you should take of 2 - 3 mm of the length.

After doing that, you should first screw the screw into the magazine when the bottom is removed, just to make sure that the thread is ok to screw.