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.