Bluing P220 factory barrel

[rinoray]

I have a 45 acp P220 factory barrel that has started to show wear marks in the exterior bluing. No surface devaitions according to micrometer - just cosmetic. What is the best product for this procedure and has anyone performed this task that could provide some feedback.

Thanks in advance!

 

[George Stringer]

Rinoray, for simple touch-up Brownells 44/40 is instant and just required degreasing, wiping on, wiping off and oiling. www.brownells.com. George