Help and information required please. I am looking to buy a 39a for target/range use. OK I want another marlin, I have field .22rf rifles for small game/vermin use. I am looking on gun trader this side of the pond and my smith is also looking. I see a Mountie version but don't know the difference, Also it has to be a JM marlin the serial numbers are also a little confusing. Any help and information would be gratefully received, thanks Gareth.