I have two Sig P320s one is a 40 and the other with 3 slides. 2 of the slides are 9mm (one is RX) and the other is a 40/357Sig.
My question is how can you tell the difference between a 40 or 9mm slide (if there is a difference). I see no markings on the slide itself to give an indication.
The barrels seem to fit in either well and I can tell no difference.
Suggestions are welcome !
June 22, 2018, 06:42 PM
RichN
My 40 and 357 barrels will absolutely not fit in my 9mm slide.
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June 22, 2018, 07:45 PM
Mytmoss
quote:
Originally posted by RichN: My 40 and 357 barrels will absolutely not fit in my 9mm slide.
It seems with the musical chairs I was dealing with slides and frames, I thought they could fit both. You are correct, the 40 will not fit into the 9mm.
Michael Moss
June 23, 2018, 03:13 AM
Il Cattivo
Just out of curiosity, do the 9mm barrels seem particularly loose in the .40/357 slides?
June 23, 2018, 04:59 AM
SIGWolf
As I recall, it's not just the P320. My P229 would be the same, also the SigPro, any SIG I've ever owned would require a slide change as well as the barrel if you want to change calibers.
The only exception is a 9mm conversion barrel. I've had one made for a P229 .357sig. The barrel was custom made then fitted and was fine with the .40/.357 slide. However, if you are using a factory 9mm barrel, you would need a 9mm frame with any SIG.
There is a reason the caliber exchange kits include both barrel and slide.
There is a dimensional difference in the two slide I've been told.This message has been edited. Last edited by: SIGWolf,
June 23, 2018, 09:06 AM
Mytmoss
quote:
Originally posted by Il Cattivo: Just out of curiosity, do the 9mm barrels seem particularly loose in the .40/357 slides?
Once I figured out which slide was which, I did not try the 9 in the 40 slide, so I have no idea. Maybe the next time I am taking them down I will check.