Magazine clamp for PMAG

I couldn't find a mag clamp that works with plastic PMAG brand mags. I  made one to fit PMAG mags, I made the lip a bit longer then other ones, I added room for the cross pattern on the PMAG. It fits 95% like a glove (the best I mad do). This will require two 6mm bolts and nuts about 70mm long.
This is for airsoft.