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Discussion Starter · #1 ·
So I've searched this forum every way I could think of, but haven't found the answer...

Since its one of the few models that isn't an "I hate my hands and vision" conversion, has anyone ever succeeded on a 380 to 9mm rechambering?

I know the most likely path is just to swap barrels which lots of folks have done, but I'm trying to source a 9mm comp barrel for my dad and scarce doesn't even begin to touch on how hard its been to find one.

I'm lucky enough to have both a 9 and a 380 comp setup and I'm going over my options. I'm also fully aware that any machinist or smith will likely charge more than a new C9.

Thoughts? Legends? Anyone actually done it?
 

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I made the swap. Changed the barrel, recoil spring and slide. The slides are the same, just marked different. I went from a 100% reliable pistol to one that was about 90%. Changed to extractor and upgraded to the new style striker springs and polished it up. It did not get any better. Changed it back to 380 and it was 100% again.

I have a thread about it here somewhere I think
 

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Discussion Starter · #3 ·
That is not what I'm asking about. I know that entire platform is largely interchangeable. I'm alking apecifically if anyone has actually rechambered a barrel successfully, not aimply swapped one for another.
 

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That is not what I'm asking about. I know that entire platform is largely interchangeable. I'm alking apecifically if anyone has actually rechambered a barrel successfully, not aimply swapped one for another.
Why would you rechamber? You would still need to swap the springs, and you can buy a barrel much cheaper than it would cost to rechamber, even if you rechamber yourself and just rent the cutter?
 

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Why would you rechamber? You would still need to swap the springs, and you can buy a barrel much cheaper than it would cost to rechamber, even if you rechamber yourself and just rent the cutter?
Because he has a 380 comp but wants a 9 mm comp and can't find a 9 mm comp barrel.

Peace favor your sword ( mobile)
 

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So I've searched this forum every way I could think of, but haven't found the answer...

Since its one of the few models that isn't an "I hate my hands and vision" conversion, has anyone ever succeeded on a 380 to 9mm rechambering?

I know the most likely path is just to swap barrels which lots of folks have done, but I'm trying to source a 9mm comp barrel for my dad and scarce doesn't even begin to touch on how hard its been to find one.

I'm lucky enough to have both a 9 and a 380 comp setup and I'm going over my options. I'm also fully aware that any machinist or smith will likely charge more than a new C9.

Thoughts? Legends? Anyone actually done it?
Yes, a gunsmith could cut it to 9 mm. You would have to change the springs. Might have to upgrade the firing pin stuff too. That said I strongly recommend against doing so.

Peace favor your sword ( mobile)
 
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@RobertRoberts I too have thought about taking my 380 comp barrel and reaming it out to 9mm. In theory, it should work, but as others have already pointed out you'd have to swap out for the correct recoil spring, and you'd want to swap out F/P spring as they also affect recoil.
 
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Didn't know
Because he has a 380 comp but wants a 9 mm comp and can't find a 9 mm comp barrel.

Peace favor your sword ( mobile)
why not just wait on the mythical YC9 (coming in late 2019!) and put a compensator on that? FWIW, Hi Point says they are having issues with the magazine.
3C65C42E-269B-4172-B813-0DA59FD0DAB0.jpeg
 

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I owned a 9mm comp and a regular c-9 at the same time. Their was not a big difference between them shooting. Maybe 10% less recoil.
 

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Discussion Starter · #13 ·
Oh it really has nothing to do with performance...

Its just that I have one and he doesn't, and he wants one.

I'm trying to figure out how to make it happen for him without needing to depend on lightning striking again and me stumbling across another c9 comp barrel for chump change.
 

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Oh it really has nothing to do with performance...

Its just that I have one and he doesn't, and he wants one.

I'm trying to figure out how to make it happen for him without needing to depend on lightning striking again and me stumbling across another c9 comp barrel for chump change.
Give him yours.

Seriously.

Trade him your Comp for his C9 or just give it to him and go buy a new C9 for yourself.

I mean, the man changed your poopy diapers, wiped your snotty nose, cleaned up your vomit when you were sick, taught you to drive, tie a necktie, and more. It's just a C9 Comp. Gift it to him.

Peace favor your sword ( mobile)
 

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I have a line on a couple through gunbroker. Two popped just this week. Might have lightning striking twice after all. Fingers crossed.
Shhhh, never post something like that, you'll get sniped! Don't ask me how I know, it's a painful memory. Post your success after the fact.
 

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That works for me too... about 1% of the time.
 
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Shhhh, never post something like that, you'll get sniped! Don't ask me how I know, it's a painful memory. Post your success after the fact.
Just who might you be calling a sniper?
 
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Snipers are hidden, you never know who they are or where they are -until it's too late.
 
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