That's the lock I used on the 2nd rifle I ever built 30+ years ago. RH Dixie Ashmore, .45 x 13/16 Douglas on a Poor Boy.
I agree, it's not up to today's standards, but that little lock is still running and still sparking today !
If your helping, Dennis, I'm sure you would be able to fix any problems encountered.
Besides, aren't we all going "GREEN" now........ remember- recycle !?
Mark