Refinishing an 870 Police Magnum

[Guest radian23]

I picked up a used 870 Police Magnum for $300. Found out it was built in 2004. I'd like to refinish it with Flat Black Moly Resin as I have some around the house. I was wondering if I can spray over the parkerized finished after I've degreased it or if I should have it sandblasted off and apply it directly to the metal. I don't have a sandblaster at home so I'd have to bring it somewhere to get sandblasted. Any advice would be appreciated. Below are pics of my new shotgun.

[I_Like_Pie]

Disassemble it, clean it good with simple green, then use dishwashing liquid, then boil it in a TSP solution. In short made sure that you get all the oil grease out. Once you do that then paint right over the parkerizing. The paint grabs it better than bare metal and the combo is just about the most corrosion resistant finish that you can put on a gun.

If you have used the moly resin before then you do know to preheat the parts to about 100F and apply as little paint as needed (don't overdo it) before you bake it. I let the paint dry for a day or two before baking because it smells less awful.

Have done several guns just like that one using the same paint and over the same parkerizing with superb results....it simply will never rust. Matter of fact I parkerize first on every gun I paint with moly resin.

[Guest radian23]

Disassemble it, clean it good with simple green, then use dishwashing liquid, then boil it in a TSP solution. In short made sure that you get all the oil grease out. Once you do that then paint right over the parkerizing. The paint grabs it better than bare metal and the combo is just about the most corrosion resistant finish that you can put on a gun.

If you have used the moly resin before then you do know to preheat the parts to about 100F and apply as little paint as needed (don't overdo it) before you bake it. I let the paint dry for a day or two before baking because it smells less awful.

Have done several guns just like that one using the same paint and over the same parkerizing with superb results....it simply will never rust. Matter of fact I parkerize first on every gun I paint with moly resin.

Awesome. Thanks for the advice. I used it before on an ak47 I was refinishing but wasn't sure if i needed to get it sandblasted first. Glad I can skip that step...

[I_Like_Pie]

The one thing that another sandblasting will get you is a blank canvas free of gouges, scars or scrapes. If the gun is already parked and you are happy with the shape of the gun then I see no reason at all to do over what has already been done.

Since you have pained before you know that the moly resin is so thin it does not hide any blems. I love projects like yours...little elbow grease, but very satisfactory results.

I personally would NOT un-stake the rails inside the receiver for a "complete breakdown." Not sure how far you will break down the receiver, but the peened parts are not worth removing for a job like yours....need a special tool to get it back together without possibility of part failure down the road.