About this 3D model
Here are various versions of my HDR 68 Mag holder. 1 with clip 1 with picatinny mount The mount itself is taken from http://www.thingiverse.com/thing:2140772 need M3x30 screws and M3 Nut 2 with molle mount in two directions i recommend to print it 30° or 45° rotated to get more stability.