u/Glwik80

Just got a brand new Pietta 1858 new army revolver, and it has this reddish brown thing around 3 percussion cap nipples and more importantly at the bottom of on chamber (see pictures). The revolver came drenched in oil in it plastic wrapper so I don't really get how rust might have developed but I don't really see what else it could be... Also should I return it or can I just clean this off and use it with no after thought ? Thank you :)

EDIT : it was a residue that dissolved easily with rust solvent and the metal is intact underneath, huge thanks to everyone who chimed in !