I am engraving a Remington 870 for a local charity. I am attempting to French Gray the receiver but not the magazine tube. Im using PPG metal conditioner for the gray. Any ideas on how to protect the tube?
Black electrical tape should do fine to keep that stuff off the tube. I assume you have the receiver there without the stock and barrel and just that tube sticking out. I can't remember how that magazine tube comes out or I'd just describe how to do it and solve that problem altogether.