Thanks. I have sourced all the usual places. A Canadian company purchased all the Browning inventory years ago. They have since sold all their parts also. I hate to stop using this rifle so may have to have a gunsmith build some lock parts. This one has notches for elk, deer, antelope and bear plus 36 years of local shoots and Rendezvous. I would purchase another one but the .54s are hard to come by or are about 4000 rds down the road like mine.