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  #1  
Old 05-22-2020, 11:21 AM
jtkrpm jtkrpm is offline
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Whatís wrong with MIM parts?

The MIM parts on rugers fit and function just fine. Function a lot better than the forged parts on my other 1911 out of the box
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Old 05-22-2020, 11:34 AM
Magnumite Magnumite is offline
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Search function is your friend. You could do a doctorate's on this subject.

Good mim gets the job done. I like the mim parts in Ruger's pistols. I do not care for the flats they put on the pins of those parts. My two Ruger 1911's both have new slide stops because of that fitting flat. Also grip safeties are replaced, not because the grip safeties were poorly made...they didn't play well with my hand when shooting the pistol.
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The modern production 1911 - high visibility sights, beavertail grip safety, aluminum trigger, good trigger pull, enhanced slide/ frame fit, accurized barrel/bushing fit. If itís not a Kimber, itís a copy.

Last edited by Magnumite; 05-22-2020 at 11:36 AM.
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  #3  
Old 05-22-2020, 01:06 PM
dakota1911 dakota1911 is offline
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If MIM is done well it makes for a good part. But if not done well there can be issues.
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  #4  
Old 05-22-2020, 01:42 PM
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RickB RickB is offline
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Which, of course, is true of any process.
I have 50k rounds on a MIM slide stop and ambi safety, and both are still ticking.
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  #5  
Old 05-22-2020, 04:28 PM
Autonomous Autonomous is offline
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MIM's biggest challenge is hysteria.
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There is something to this 1911. I think it'll catch on.
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Old 05-22-2020, 04:48 PM
Magnumite Magnumite is offline
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^^^ there's a quotable quote
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The modern production 1911 - high visibility sights, beavertail grip safety, aluminum trigger, good trigger pull, enhanced slide/ frame fit, accurized barrel/bushing fit. If itís not a Kimber, itís a copy.
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  #7  
Old 05-22-2020, 05:24 PM
rellascout rellascout is offline
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Hilton Yam's thoughts on MIM. He might or might not know anything about 1911s.

https://youtu.be/0fE4veJykLg
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Last edited by rellascout; 05-22-2020 at 05:30 PM.
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  #8  
Old 05-25-2020, 09:25 AM
Wayne3593 Wayne3593 is offline
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MIM serves for a price point and is considered unacceptable after crossing that threshold. I honestly have no issue with it and have spoken to gunsmiths who spoke very highly of Ruger's MIM parts. Some folks also don't like cast frames but again, if made right it will last. My Ruger 1911 has over 10k rounds put through it and still functions fine.
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Old 05-25-2020, 09:29 AM
VIS35 VIS35 is offline
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Nothing
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Formerly "flinch" on the forum, but that's a story in itself
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  #10  
Old 05-27-2020, 07:30 AM
Viper_29 Viper_29 is offline
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Of parts that have broken on my 1911's, 3 extended ejectors and a safety lever (That was a MAJOR manufacturer part from a high-level retailer and both swore it was counterfeit China knockoff though it was their packaging), but none of those were tool steel/machined/forged parts. I'm not of the camp in either direction but that's the facts as I've experienced them. At a certain price point it's expected.
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  #11  
Old 05-27-2020, 08:17 AM
tray burge tray burge is offline
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Quote:
Originally Posted by jtkrpm View Post
The MIM parts on rugers fit and function just fine. Function a lot better than the forged parts on my other 1911 out of the box
If that's the case, the MIM parts were just hand fitted better is all.
Nothing wrong with MIM parts, I have many that have them; that being said, forged tool steel bar stock will always be stronger and nearly unbreakable.
If a MIM part is going to break the bar stock in it's place (probably) wouldn't have.
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Last edited by tray burge; 05-27-2020 at 08:21 AM.
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  #12  
Old 05-27-2020, 09:54 AM
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dsk dsk is offline
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You can blame Kimber for the reputation of MIM parts. Back in the early 2000s they had a rash of issues with broken parts, everything from thumb safeties snapping off to grip safeties literally breaking in half. I had two Kimbers, and between them I had a failed slide stop, ejector retaining stud and firing pin safety block. The problem wasn't with MIM in general but the quality control of whoever was their supplier at the time. When the sintering, debinding and heat treating processes are properly controlled you end up with a part far superior to a cast one and nearly as strong as a forged component. But if the process isn't controlled you can end up with parts that have tiny voids in the metal that become future failure points. That being said, it's possible to have bad cast and forged parts as well. But MIM has become the wave of the future because it's much cheaper to make parts in volume that way. Virtually every gun manufacturer uses it now, so it's not going away.
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Avoid the temptation to replace everything on your brand-new 1911 just to make it "better". Know what you're changing out and why. You may spend a lot of money fixing things that weren't broken to begin with. Shoot at least 500 rounds through it first, then decide what you don't like and want to improve. Regarding vintage 1911s, pre-1970 pistols are highly collectible in original, unaltered condition and should NEVER be refinished or modified as it completely ruins their monetary value.
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  #13  
Old Yesterday, 08:48 PM
indianagenius indianagenius is offline
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Nothing wrong. Just MIM parts painted black is the issue for Ruger. Ugly.
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  #14  
Old Yesterday, 10:31 PM
John Joseph John Joseph is offline
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They lack the love of a machinist/artisan.
That's about all.

Do new M-2s have MIM parts, I wonder?
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