There is a big difference between castings and MIM. You may want to read the link above to understand.ColdIron said:MIM parts are castings as opposed to forgings (hot or cold) or machined from bar (billet). Generally speaking castings are considered inferior to the latter. However, Ruger uses lots of castings (lost wax) in their firearms and they are almost indestructible. Cold Iron
Doc:AHancock said:From what I'm beginning to understand, seems like the negative issues with MIM are not that a durable, quality part cannot be produced, but that the process itself may produce more defective parts, whose defects may be undetectable until failure. Close?
Doc:AHancock said:Thanks Stu! Seems like the trick is getting a reliable supplier with good QC, and double-checking through extensive random testing for failure - less cost in manufacturing, higher costs in slower production and more extensive failure testing (probably fewer guns get off the line). If you skip steps to save money (Kimber?), you get more new gun failures and more unhappy customers.
Great forum, great bunch of guys. I bought my first Kimber about a month ago, and couldn't be happier. 100% function out of the box, and it's all steel, and missing the lawyer-inspired features, too. (OK, I wouldn't mind a loaded chamber indicator.) I'll probably swap out the extractor and the magazine release when I get the itch, but we're just getting past the "probably will fail by now" time.So far, so good w/my Tactical Pro; first 100 rounds no FTF or FTE, 3" offhand (Weaver) @ 25 yds; happy with that at my age and eyesight! Gun got picky as it got dirty later, but expect that with any new auto. No broken MIM parts as far as I know; looking at a Wlson CQB though; like the detachable light rail! Thanks again; great forum...