I fiddled with this little 45 kid gun that I built 30 years ago. Replaced the trigger guard with a cva Kentucky guard that was broken off in the rear extension. The first one was a very poor excuse with ultra thin brass that cracked at all the mount screws. Found some interference in the lock inlet and fixed that. It wasn't allowing the sear to fully engage. One of the thimbles had fallen off (soldered) and I fixed that a couple days ago.
When I built this gun I used a rough blank that had a barrel channel and did the RR hole myself. The guy I got it from, $10 maybe $15 thought it was maple. When I tested a piece of cut off the ferric nitrate turned it black as a manhole in hell!!! So it probably isn't maple. It was one gnarly ball where the breech, tang and lock come together. Learned a lot with this little beast.
Grandsons shot it in many matches and always placed at least top 3. Has a good GM barrel on it.
Trigger was always too light and needs to be re pinned further from the sear arm.
Pretty much a waste of time but it was fun.
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