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Old 04-07-2017, 07:51 PM   #1
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1911 Parts Interchangeability

I spend a lot of time handling and fondling my Ultra Carry II, and it occurs to me that I could take a .45 barrel and recoil spring assy and exchange it with the 9mm barrel with little issue. And, I bet the .45 ACP mag will fit and lock in the well and function.

Taking a look at the lower frame, it's a standard 1911 frame that is shortened, but still remains the same with regard to all the mechanical parts. I can't see Kimber tooling up for a completely new gun on a 1911 frame when all that has happened is that it has been 'bobbed'. The only parts that are marked 9mm are the barrell and magazine. The mainspring housing has also been shortened it seems, and appears to be made of plastic. Additionally, nowhere in the Kimber exploded diagrams for the 3-inch, short grip model does it distinguish between 9mm and .45 ACP. Granted, there are no part numbers, either.

I'm not saying this would be a drop-in; in fact, I imagine some fitting would be required. But I'm thinking it would work.

Thoughts?
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Old 04-07-2017, 08:24 PM   #2
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my tangfoglio is like that..just swap slide assembly and mag
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Old 04-07-2017, 08:40 PM   #3
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No on many counts. Breechface dimension. Ejectors are different as are firing pins. Barrels need fit many timing issues there are differences to the frames. Extractors are different. Etc etc.

Having a 9mm and fitting a 38 Super barrel is possible. But a 45/9....
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Old 04-08-2017, 05:19 AM   #4
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Even the slide stops are different.
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Old 04-08-2017, 09:02 AM   #5
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Yeah, didn't think about the breech face. Big difference, slide-wise.
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Old 04-08-2017, 09:37 AM   #6
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Old 04-08-2017, 10:04 AM   #7
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Idol hands and minds are the devils workshop! Quit fondling you Kimber and go shoot it and post pictures of guns and dead targets things like that.
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CDP Pro II .45 acp
Raptor II (blue) .45 acp
Eclipse II 10 mm
Ultra Carry II .45 acp
Stainless Pro Carry II
Solo STS 9 mm
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Old 04-09-2017, 09:07 AM   #8
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Originally Posted by swca View Post
Idol hands and minds are the devils workshop! Quit fondling you Kimber and go shoot it and post pictures of guns and dead targets things like that.
True dat...

I am pleased to report that my Ultra Carry II functioned flawlessly at the range yesterday. I fed it 100 rounds of S&B 147 gr RN and it ran without a hiccup. I even fired some of the ammo I originally had issues with, and no malfunction whatsoever. No target photos, however, but suffice to say I am quite pleased with its accuracy.

It's a nice weapon that I'm sure will give me many hours of enjoyment, both on and off the range.
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Old 04-25-2017, 08:15 PM   #9
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Anyone confirm that the ejector is the same on both frames on 45acp and 9mm? If so someone could just trade slide compete uppers and magazine.


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Old 04-25-2017, 08:27 PM   #10
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Originally Posted by Marshall View Post


Ejector pined in frame, not the extractor in slide. Can't find ejector on Kimber since a skilled gunsmith is required for install.


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