.40/10mm vs 9mm breechface

[freakshow10mm]

Currently I have a custom built (mostly by me) Kimber Pro Carry 10mm using a Fusion Firearms slide and barrel in 10mm.

I'm pretty familiar with the 1911 as far as the slide and frame being nominal dimension to fit various cartridges. I know the 9mm, .38S and .40/10mm all use the same extractor and it will hold the 9mm in place on the slide.

The one thing I'm not sure of is if the breechface on the .40 slide is the same as the 9mm Luger slide.

What I'm trying to do is set my 1911 up to shoot 9mm. I have two choices: get a new slide with internals and barrel fitted or get a 9mm barrel fitted if the .40 and 9mm breechface are the same.

I prefer to just get a barrel fitted, for simplicity and mostly cost reasons.

[yoshidaex]

New top end.

You may get it to work but it won't be 100%.

[Nick Ennis]

My Kimber stainless target II is a 9mm and came from the factory with a .40 cal breechface and runs 100%. There is a thread here about Kimber using a .40 breachface for thier 9mm for a few years. I'm going to have a .40 barrel fitted to it and it should be just fine.

[freakshow10mm]

Well, my slide is a Fusion, but thanks for the info.

I'll try buying a 9mm commander barrel and see if that will work first.