Kimber Eclipse 10mm to 9mm conversion (SUCCESS)

[MuayThaiJJ]

Just in case anyone wanted to try this. Come back from the range and it worked great! This is the Kimber Eclipse Custom II chambered in 10mm, I converted it to 9mm.

Took a 19# mainspring, 12# recoil spring, and new barrel. I had to hand fit the barrel with filing, sanding, and lots of hand cycling. Went to the range and had some cycling issues. So I drenched it in oil and it cycled perfectly. Locks up tight and has very little recoil. The spring is still breaking in. Put 125rds in.

[dfletcher]

Interesting. I have the Eclipse II 10mm - which barrel brand did you get & where?

FWIW, I did similar with a Springfield 1911 in 9mm and a 38 Super barrel. Just for the fun of it. Going from 10 to 9 makes economic sense, and no need to crawl about looking for brass.

[M76]

could this be accomplished with an Ultra Carry II .45?

that would be sweet...

[MuayThaiJJ]

Interesting. I have the Eclipse II 10mm - which barrel brand did you get & where?

FWIW, I did similar with a Springfield 1911 in 9mm and a 38 Super barrel. Just for the fun of it. Going from 10 to 9 makes economic sense, and no need to crawl about looking for brass.

Find any FS 5" 9mm barrel with Wilson/Nowlin ramp. I have been getting my barrels custom made match grade stainless steel from Fusion but I bet there are a lot around if you look. Good luck!

[MuayThaiJJ]

could this be accomplished with an Ultra Carry II .45?

that would be sweet...

The ejector would need to be swapped out for a longer one.
Then just get a new barrel, possibly bushing, recoil spring and mainspring.
Make sure you get the correct type of ramp for your new barrel.

[still919]

Good to know. Glad it worked out. Sounds like you did it right.

[MuayThaiJJ]

The awesome thing about a 1911, is that it can be modded. It's the perfect shell for tinkering with IMO

[dfletcher]

Find any FS 5" 9mm barrel with Wilson/Nowlin ramp. I have been getting my barrels custom made match grade stainless steel from Fusion but I bet there are a lot around if you look. Good luck!

Thanks - was looking at Fusion.

[MuayThaiJJ]

Thanks - was looking at Fusion.

They a great, quick turnaround, high quality barrel. A bit sharp so you can sand and fit it yourself. Tyler Serva respond to all emails and was great. I bought all my springs from them. They also helped me make a 38 super, 9mm, and 380 convertible 1911 =)

[MuayThaiJJ]

Gonna try a 17# mainspring and 10# recoil spring tomorrow, will report.

[JTROKS]

Did you do anything to the extractor?

[BajaJames83]

Any reason to do this other than get a 9mm gun?
While it is nice you can do this it is not like it's a easy swap back and forth at the range type conversion.

[MuayThaiJJ]

Did you do anything to the extractor?

Nope, same extractor is used for both 10mm and 9mm

[MuayThaiJJ]

Any reason to do this other than get a 9mm gun?
While it is nice you can do this it is not like it's a easy swap back and forth at the range type conversion.

[Sailormilan2]

Good job. Now you need to get a 38 Super barrel.