fxvr5
Member
- Joined
- May 26, 2017
- Messages
- 3,273
How is that? So there's room around the barrel to slide hood area when using a 9mm conversion barrel. I'll have to check as I don't have one myself, but I though these conversions were keeping the same OD.
The exterior dimensions of the 9mm barrel and the 40 to 9mm barrel are the same. Thus the chamber wall thickness and barrel wall thickness are the same. The exception is the width of the hood. It's wider on the conversion barrel because it has to fit the wider cut in the 40 slide breech. On these guns, you could just put a 9mm barrel in the 40 caliber gun. But the 9mm barrel hood is smaller than the 40 breech cut, so the 9mm barrel will have a sloppy fit.
If one goes from 40 to 9mm if the barrel maintains the same outside diameter the barrel's walls have to be thicker due to bore/caliber size. The same goes for the chamber.
Correct. But the reply is comparing a 9mm barrel to a 40 to 9mm conversion barrel.