I have a question about the Blue Whistler ,32 rimfire, is the barrel screwed in or pinned? I am looking at reworking the pistol to 22 rim fire and think it might be as easy to put on a new barrel as line the original. It will be very thin where it goes through the frame if I have to drill it out. I know the pistol is junk and worthless but I think it will be a fun project and it will cost nothing but time and scrap is about 2 cents a #.