Are they still shooting accurately and functioning 100 percent reliably? If so then there is NO need to clean them. In fact, the instruction manual for my Marrrlin 917vs clearly states that under normal use you should NEVER clean the bore!
By all means, get a bore snake for each caliber and a bottle of clp, but don't go creating extra wear on your guns if they don't need it. Oil then enough to keep rust at bay and contact points in semi autos and that is all you need to do.
By all means, get a bore snake for each caliber and a bottle of clp, but don't go creating extra wear on your guns if they don't need it. Oil then enough to keep rust at bay and contact points in semi autos and that is all you need to do.