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Newer 870?
RobOz
Member Posts: 9,523 ✭✭✭
How are the extractors on newer 870"s manufactured?
Thanks,
RobOz
Thanks,
RobOz
Comments
http://en.wikipedia.org/wiki/Metal_injection_molding
Brownells offers a machined steel replacement..
http://www.brownells.com/shotgun-parts/extractor-parts/extractors/extractor-non-mim-prod10745.aspx
Remingtons Law Enforcement/Police models come standard with machined extractors, as well as other upgraded parts and enhancements..
http://www.educationalsurplus.com/sms/docviewer/aucdoc/Remington Shotguns-diff. between 870 model types.pdf?auc=556233&docid=3346963
The metal for gun-parts, is a high strength, low alloy ferrite bering metal.
Best
thanks. That MIM sounds like a nice way to say cast pot metal.
Its not at all.
"Pot metal" refers to cheap zinc alloys that are easy to make but are soft and offer poor durability.
"MIM" refers to a specialized process using super-fine steel particles mixed with a binder, injected into a mold, then fired at nearly the metal melting temperature to make the binder burn off and the particles fuse together. Its somewhat similar to the older "sintering" process, only more advanced, and far better.
When done correctly, MIM parts are quite tough, nearly as strong as forged metal parts, though potentially less expensive to manufacture.
Plenty of "name" gun companies (including Ruger, Smith and Wesson, etc) are building their gun FRAMES with MIM, not to mention a variety of other parts and these parts are plenty tough. Remington uses MIM on LOTS of its internal parts. . .I'd be shocked if the extractor was the ONLY MIM part on a new 870.
I wouldn't argue that forged/machined steel parts aren't *potentially* better, but it depends on the exact application. For sights and triggerguards or such, that aren't subject to repeated stress, MIM probably *IS* better because its cheaper.
For extractor. . .probably not quite as good, though still adequate.