[Lopper]

there are a bunch of .40 to 9mm barrel kits out there. Is there any reason why to not change a 9mm to a .40 every thing the same other than the barrels and the mags if I'm reading the kits right

 

[agalindo]

Breech face is the reason.

 

[AZXD]

I know of no reason why you shouldn't consider/do such a conversion.

 

[agalindo]

I know of no reason why you shouldn't consider/do such a conversion.

Are you serious? There is one big reason the breech face is too small. It won't work.

 

[phmann]

you risk breaking the extracter and ejector when going to a larger size casing.

 

[agalindo]

No not breaking the extractor. The breech face is too small.