Bob - The lock is about 4 1/2 inches long....fairly small.
Eric - No, Jerry didn't make the lock. He thought is was the same as the ones Uberti used on the George Washington cased pistol sets they sold back in 1976, but it was not the same...but he couldn't remember where he got it...
Clark - Yes, Chris' kit is similar....but not a match.
The lock has the lock bolt hole already in place and they appear to be 8-40 thread. Looks like a commercially made lock....but well made and well polished.