Lubrication for the 870 WM (1976) Trigger Group

[Virginian]

I will usually take mine apart - just partway, I don't take out any pins that require driving them out - and then I go outside and blast it good with RemOil and shake out the excess. Then I take a shaving brush (yes they are still available) and work the bristles in everywhere and then wipe it on a paper towel and repeat several times. Doing that yearly has been working with 1100s and 870s for 49 years with no issues. About every 5 years when i used to shoot a lot and dirty powder I would pull it down further and clean out the spring sockets with a Q-Tip too.
I used to use WD-40, but RemOil is a better lubricant. And before someone starts in on WD-40 I will add that it is a solvent for itself, so if you don't leave it soaking wet; no residue build-up.
Be careful of any solvent other than denatured alcohol with any plastic parts.
Good luck.

[Virginian]

If you have any grease on it and go out in cold weather expect issues. If you don't have one, go to www.remington.com and download a manual. After the mandatory 10 pages of "Don't shoot your foot off" there is some good info in there.

[Virginian]

I lived in Ontario for a couple of years, and I have chased waterfowl in Manitoba some. Yes, it do get cold up there. I have a '76 Wingmaster Magnum and had a blast with it in Netley Marsh. One day I did not miss a duck. Enjoy yours in good health.