Parkerized Remington 870

ALL 870s have steel receivers.

And if you really are gonna use an 870 as a salt water boat gun, get a Marine Magnum - or have your current 870 hard chromed or finished in electroless nickel - and be done with it. Parkerizing is not salt water resistant.
 
Remington says their parkerized finish as used on the Police models and some older Special Purpose guns is 60% more rust resistant than bluing.

Keep a coat of CLP Breakfree or grease on it and it's pretty rust resistant.
You could also do what salt water duck hunters do. Apply a thick coat of Johnson's Paste Wax to all exposed metal, then warm the wax with a hair dryer to melt it.
Allow it to dry 20 minutes and wipe off the excess.
Experienced salt water hunters swear by this.
 
Keep a coat of CLP Breakfree or grease on it and it's pretty rust resistant.

Coat ANY gun with CLP or grease and it will be pretty rust resistant :D
Also, IMO, Ezoxx is much better than Breakfree for that purpose.
 
If you are actually on the water often, do what Lee suggests if you want to avoid a lot of maintenance. My family has a beach house and parkerized shotguns will rust fairly easily, especially on a boat, if you don't keep them oiled up real often. Yes, you can wax them, but the wax has to be re-done occasionally, degrades with solvent, and is hard to get into all the tight places...and doesn't help the internals. Spend the $$$ for a more rust-resistant gun and save yourself time. I keep a Metaloyed 870 down there these days and it has worked out well.
 
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OK, so what is the better treatment for it; i.e. hard chrome, Duracoat, etc., and what's it cost compared to getting a Marine Magnum? BTW, I aleardy have a Marine Magnum, but it's in MO, and didn't want to go through the hassle of shipping it down to FL.

Also, what is the best recoil-reducing stock, and is a red dot good to put on it for boat duty? And are 3" rounds any better than 2-3/4"?
 
Hard chrome is more durable then the Marine Magnum nickel, but I only know of one plater who will also plate the inside of the bore and chamber.
The Marine Magnum bore is coated.

Price-wise i don't know how you'd come out, that depends on what you have to pay for the Marine model.

The Mossberg marine version gets good reviews and the aluminum receiver needs no coating to be rust proof. I "think" they also coat the bore.
This comes down to a Remington versus Mossberg debate.

A semi auto won't take the lack of maintenance and still work as well as a pump.
I don't know if anyone makes a marine auto but they probably do.

A lot of shooters like Ballistol for a number of things with guns, but as a rust preventer, it's no more effective than a number of other products and not as good as many products.
In the end, it's just a liquid and like all liquid lubes it will wash off and wipe off leaving the metal to rust.
 
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