i have a small problem with my Beretta A390's barrel. it's almost impossible to remove the barrel. i've tried a deep cleaning and i used a generous amount of regular gun oil, but it still got stuck in the receiver. would a a product like, loctite's anti-seize grease work to prevent this problem? any recommendations?
Assuming nothing is wrong (burr, out of spec milling, etc.) I would put a very thin coat (paper thin) of a milspec grease on the top of the mating surfaces. I have used both Tetra gun grease and Kleenbore TW25B for years in my M1 Garands and those products will hold up. In fact I use a very light coat of Tetra grease on my choke tube threads and have never had one seaze up on me when using it. I also use it on the bearing surfaces of my SxS and O/U shotguns.