To all that have answered...Thank you

Didn't mean for this to be a trainer thread but I'm thankful to get the info. Yep I got it from Joe Salter...Now, if I understand Frederick303 correctly, you have determined it has a re-bored Irish Free State barrel by virtue of the AM 1186 S/N. I have found no FF marking anywhere on the wood or metal. I include more markings photos for identification. Can anyone tell me if the lined out S/N is consistent with how BSA stamped their S/Ns? and can it be determined approximately when it was made in 1916Does the S/N fall within the range that went to Irish Free State?