9mm 1911 question


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JBrady555
November 11, 2012, 01:25 AM
Hello I have been searching this question but have come up short. Is the bottom end of a 1911 9mm the same as the .45 model? All the parts are interchangeable except the barrel and slide right? Also are the 9mm versions as reliable and accurate as the .45s? thanks

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smalls
November 11, 2012, 02:02 AM
No, the feed ramps are cut at different angles, and they have different sized ejectors.

Reliability and accuracy are subject to a lot of factors, just like any gun. But they're not inherently inaccurate or unreliable

JBrady555
November 11, 2012, 02:25 AM
But all the receiver stuff interchanges though right, like the trigger parts, grips, and grip safety?

smalls
November 11, 2012, 02:37 AM
That I'm not exactly sure on, I know safeties and grips and triggers will, but I think I've seen slide stops marked different calibers. So there may be one or two parts that won't interchange. Best bet is to call the manufacturer of the replacement part you plan on putting in.

9mmepiphany
November 11, 2012, 03:23 AM
Three parts in the lower that immediately come to mind as being different are the ejector, slidestop and the magazines.

The 1911 platform shooting a 9mm will be inherently less reliable due to the OAL of the cartridge compared to the action travel. This is the same reason folks shooting the .40 in 1911s, load them long for more reliable feeding.

Hilton Yam's blog has several entries on his journey to get a 9mm 1911 to function reliably for training. It is worth a read for anyone thinking about using one

rbernie
November 11, 2012, 08:32 AM
The best way to make a 9mm 1911 reliable is to ditch the goofy mags that use a spacer in the back of a 38 Super design and instead use a spacer in the front, a la the Springfield/Leatham design.

All of the bottom end parts of a 45 ACP 1911 will work in a 9mm 1911 except for the longer ejector needed by the 9mm and the slide stop - the 9mm version has a longer internal extension to aid in making reliable contact with the narrower magazine follower. The bottom end itself will be machined differently for feed amp angle needed by the shorter cartridge, technically, although many don't bother. If the frame is set up for ramped barrels, then the frame can be the same and the ramp differences confined to the barrel itself.

Different top end parts include slide itself (smaller breechface), firing pin, extractor, and barrel.

C0untZer0
November 11, 2012, 03:04 PM
I have to confess I never understood the obsession with chambering the 1911 in 9mm - to my thinking that's what the Browning High Power is.

Skylerbone
November 11, 2012, 04:25 PM
And firing pin stop. Many 1911s chambered in .45ACP use the smaller diameter 9mm firing pin so that specific part is sometimes shared.

Agreed that 9mm 1911s are far more finicky than .45ACP.

smalls
November 11, 2012, 05:29 PM
I have to confess I never understood the obsession with chambering the 1911 in 9mm - to my thinking that's what the Browning High Power is.

The High Power does not even feel close to the same as a 1911 does in the hand, in my opinion.

Some people really, reallylike 1911's and really, really like the 9mm.

9mmepiphany's OAL statement makes sense, I didn't really think about that.

txgunsuscg
November 11, 2012, 05:38 PM
I have to confess I never understood the obsession with chambering the 1911 in 9mm - to my thinking that's what the Browning High Power is.
I do, actually. I love he ergonomics of the 1911, and a 9mm is so much cheaper to shoot, plus with the weight, I would assume recoil is nigh unto negligible, and it's fairly easy to conceal.

2wheels
November 11, 2012, 06:10 PM
I have to confess I never understood the obsession with chambering the 1911 in 9mm - to my thinking that's what the Browning High Power is.
Because although awesome, the HiPower is not a 1911.

And as much as I love .45ACP, 9mm 1911s are sweet shooters.

My EMP for example, is amazing.

9mmepiphany
November 11, 2012, 06:28 PM
My EMP for example, is amazing.
I'd just like to mention that the issues mentioned for a .45ACP sized 1911 platform don't apply to the EMP. The timing is different due to the difference in action length

JBrady555
November 11, 2012, 06:47 PM
I think I'll just go with a CZ 75. Thanks for the info.

BYJO4
November 11, 2012, 08:16 PM
I have Kimber 1911 in 9MM with just under 6500 rounds fired thru it. No malfunctions of any kind and very good accuracy.

wrench
November 11, 2012, 08:45 PM
I love 1911s, and I love Browning Hipowers. They are not the same in any way.
Just this year I picked up an STI Spartan in 9mm. It had to make one trip back to STI to fix an issue, but after that it's been 100% reliable, accurate, and fun to shoot.
I use Metalform mags, no problems.

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