The pocket clip for a Mini-Mag should work well. I use one on my civictor v1. ( Dia 20mm). The clip is part of the accessory pack for minimags. dont know about availability in Sweden.
The clip from a CMG or Gerber Infinity Ultra should work fine also. If you contact Gerber customer service, they may be able to sell you a couple. Again, I can't speak for availability in Sweden, although I see you have a Gerber IU.