Through the years, the locks on a sidelock will need some level of maintenance. No doubt a bit of cleaning of one with hand-detachable locks should be relatively easy...but what about a gun without such easy access? I bought a Purdey recently that doesn't have hand-detachable access. As I understand it, a Purdey would need access on both sides due to the location of their pins. Anyway, Purdey does not generally recommend that end-users clean their locks.... That being the case, is there a more reasonable option than sending the gun across the pond? And for that matter, how often should such a cleaning effort be made? Would it based on usage, time, or both?
