cva optima cleaning advice
 

i do a pretty good job keeping my optima clean with a combo of a bore brush, pre-soaked patches, and dry patches. The other day however i noticed some rust has built up where the gun breaks open. Some around the edge where it comes together, and then a little in the hole where the hammer hits the primer. The small amount of rust is hard to get at and i was just wondering whats a good way to remove it and if having a little rust around that area could cause the gun to not fire? Thanks guys!