From what I understand it's the same spring, just with a different material or finish to make it more corrosion-resistant. If you look through Remington's parts list, you'll notice that many parts for the 870 have a more corrosion-resistant Marine Magnum version. I doubt the Marine Magnum parts offer huge advantages over their standard counterparts, but they don't usually cost any more, either.Vitaly wrote:Synchronizor, have you tried Marine Magnum spring? Is it stronger?
What made it do that? Was it a new extractor that hadn't yet been worn in, or did the spring/plunger channel have buildup in it?Vitaly wrote:The most critical malfunction I had was when extractor depressed extractor spring and stuck in back position. That was during competition and I spent about 60 seconds fixing that. That happened only once in 4 years and thousands of rounds, but that happened in a very wrong time.