Finally found one - LP53

The Predom Lucznik pistols are pretty neat. Don't hold a candle to the LP53 though.

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Have the Predom there nice. Would love to have the LP53
 
Is that a drop-in kit? 😲
Will it work in the Predom Lucznik?
Where do I get one?!! 🤔
Yes it’s drop in the co2 are threaded little bit tricky when changing but easy after a while, it can be changed back to spring, I would think you can fit in a predom, it was made by Laurie Amatruda in uk you can look his name on google