I designed this 5+ years ago and have been using it ever since, I recently redid the model to make it more aesthetically pleasing. My mount utilizes the guns mag release to lock the gun on the mount. The one I have been using was printed in PETG. I recommend PETG but have been using one in PLA for several weeks. 

The design utilizes #8 x 2" wood screws(use desired length just ensure adequate mounting depth of screw). 

My mag holder: [https://makerworld.com/en/models/890605-ar15-pmag-holders-multiple-count#profileId-1264999](https://makerworld.com/en/models/890605-ar15-pmag-holders-multiple-count#profileId-1264999)

A redesign of this is also in progress

DISCLAIMER

I have been using this mount with zero issues for several years. I assume no responsibility for gun damage due to mount failure. Print quality and mounting into a stud are essential to functionality. 

NOT RECOMMENDED IF YOU HAVE CHILDREN IN YOUR HOUSEHOLD.  A SAFE IS ALWAYS BEST IN THIS SITUATION.