A good and simple military style lock with a serious half cock position.
That rear sight looks like it could be slid along the barrel to compensate
for different levels of shooter eyesight.
Your copying and restorations show a high level of ability that is really
great.I have never got involved in restoration on old guns but as a young
man I was involved in mechanical restoration of car engines and one boat
that had 2 big straight eight cylinder engine.
Thank you for all these great postings foe all to see.
Bob Roller