I decided to try to build a sterling pistol in 7.62x25. I started with one of the wise lite receivers we have and a pps43 barrel. the main problem was getting the round to feed, I made a new trunnion with a built in feed ramp and got it to feed with pps41 mags that have been modified. the next step will be to decide if I want to make the bbl removeable or not and if it is worth making a new mag well. for now I will thread the end of the barrel so I can do some test firing and see what else needs to be done.