Is this a box lock or sidelock gun? Meriden Firearms was owned By Sears & built their A J Aubrey guns as well as building some under the Meriden name for sale in other venues. These were sidelock guns, but seem to recall Sears also sold a boxlock gun under the Meriden name, though not positive about this.
At any rate if its a sidelock gun you might also look under the Aubrey name for parts. A search for Numrich will likely turn up their site, but I believe they actually use the name GunParts Corp now. Not being critical here, they were named Numrich so many years, I still call them that too.
