I find myself having to make 3 invincibles from repro A-1s. Two 20s and one 12.
I had previously done the upper rebates on the frame as well as the radiused corners on the trigger plates.
A major hurtle was doing the flush hinge pins. This required machining away the pin recess which is pretty large. And then turning a thick washer to weld in place of the removed material. Then new pins and pin screws were made and fitted.
The remaining tasks to do are the water table beads and the breech side clips.
I will likely update progress accordingly.
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