Changing parts for reliability

[pineappleshooter]

As I posted over in the new member forum, I just purchased a trade-in Marine Magnum. I was wondering if there are any parts that should be replaced from a reliability standpoint. I know for older pistols you should replace your springs in order to maintain reliable operation. Does this hold true for shotguns?

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[TexasArmor84]

Have you checked what year it was made? Also does it look like it’s been used heavily? The marine magnum came out in 1992 which has fairly newer parts, the 870 is a very reliable shout gun. I would disassemble it clean it, inspect and lube it. Go out and run some different loads through it. You’ll be surprised that you might not need anything


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[Synchronizor]

Like TexasArmor84 said, any Marine Magnum should be new enough to have updated parts, so there's probably nothing that needs upgrading, unless you just want to add or personalize something.

Springs and other small parts in the 870 can wear out, and should be replaced when necessary, but it's more a matter of use than of time. There are lightly-used 870s from the 1950s that are still working fine with their original springs, while heavily-used law enforcement or range-rental 870s may need new springs every year or two.