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I've read some posts about two generations of the P320.

Can anyone state when (date or serial number) this came about?

A couple of the posts refer to changes in the slide not just the change to the grip and slide lock...

quote:

Originally posted by sleepla8er:
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I've read some posts about two generations of the P320.

Can anyone state when (date or serial number) this came about?

A couple of the posts refer to changes in the slide not just the change to the grip and slide lock...

P320's do not appear to be assembled with sequentially numbered FCU's. I recently purchased a matching pair of P320C's from the same dealer who received them in the same shipment on the same day. Both had born-on-dates of 26 April 2017 yet one had a 58B serial number prefix while the other had a 58C prefix! I purchased a P320C in December 2016 with a 58A prefix. At the time, the dealer had several P320C's in stock with born-on-dates all within one week of one another. I was looking for a sequential pair but found no pattern to SIG's numbering system. In reference to your question, as with most product improvements, I doubt all of the Gen1 vs. Gen2 changes occurred at a specific serial number or on a specific ship date, but rather were phased in over a period of time.

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What changes have we seen?

Redesign of Grip Module & Slide Release
Redesign of Extractor assembly

quote:

Originally posted by sleepla8er:
.

What changes have we seen?

Redesign of Grip Module & Slide Release
Redesign of Extractor assembly

In addition to the items you mention, I have noted the following:

Improved (no slap) trigger
Slim take-down lever
Omission of slide lightening cuts
End of guide rod flush with front of slide
Omission of COMPACT-MEDUIM (grip size) on the grip module
Various changes in barrel fonts
USA vs. Italian magazine

I noticed in videos of the gen 1's that folks were having issues with the recoil spring being installed wrong, with the videos showing a square end with 2 holes. This square end causing problems if not installed straight up and down.
I noticed my recently manufactured P320 compact does NOT have this square ended recoil spring. It is now circular and cannot be installed wrong.

The subcompacts have the square ends and have to be installed correctly. The full size and compacts recoil spring guides are round and can go any way you choose.

As for assembly it is hit or miss. My full size was made in December of last year and had gen 2 everything but he old style takedown lever. My compact, made later, had all gen2 components.

I think they just used up what they had.

quote:

Originally posted by pedropcola:
The subcompacts have the square ends and have to be installed correctly. The full size and compacts recoil spring guides are round and can go any way you choose.

As for assembly it is hit or miss. My full size was made in December of last year and had gen 2 everything but he old style takedown lever. My compact, made later, had all gen2 components.

I think they just used up what they had.

The sub compacts and compacts are the same slide on a different frame right? How would a subcompact and compact slide have different recoil spring rods?
You sure it isn't just older models having them being phased out in all models?

quote:

Originally posted by AJRB:

quote:

Originally posted by pedropcola:
The subcompacts have the square ends and have to be installed correctly. The full size and compacts recoil spring guides are round and can go any way you choose.

As for assembly it is hit or miss. My full size was made in December of last year and had gen 2 everything but he old style takedown lever. My compact, made later, had all gen2 components.

I think they just used up what they had.

The sub compacts and compacts are the same slide on a different frame right? How would a subcompact and compact slide have different recoil spring rods?
You sure it isn't just older models having them being phased out in all models?

No, there are 3 slide lengths to go with 4 frame sizes. Full size, Compact (shared with Carry), and Sub-Compact.

quote:

Originally posted by BuddyChryst:

quote:

Originally posted by AJRB:

quote:

Originally posted by pedropcola:
The subcompacts have the square ends and have to be installed correctly. The full size and compacts recoil spring guides are round and can go any way you choose.

As for assembly it is hit or miss. My full size was made in December of last year and had gen 2 everything but he old style takedown lever. My compact, made later, had all gen2 components.

I think they just used up what they had.

The sub compacts and compacts are the same slide on a different frame right? How would a subcompact and compact slide have different recoil spring rods?
You sure it isn't just older models having them being phased out in all models?

No, there are 3 slide lengths to go with 4 frame sizes. Full size, Compact (shared with Carry), and Sub-Compact.

Ahh ok I see glad I asked. My thought was there were 2. Thanks for the heads up

quote:

Originally posted by hjs157:

quote:

Originally posted by sleepla8er:
.

What changes have we seen?

Redesign of Grip Module & Slide Release
Redesign of Extractor assembly

In addition to the items you mention, I have noted the following:

Improved (no slap) trigger
Slim take-down lever
Omission of slide lightening cuts
End of guide rod flush with front of slide
Omission of COMPACT-MEDUIM (grip size) on the grip module
Various changes in barrel fonts
USA vs. Italian magazine

So these are all on the Gen 2s?

I have all of the above except I still have the words "Medium Compact" on the grip frame.

Was there really an official 'Gen 2' to the 320? Or is it more just continual development "as we go"? Most if not all of the described changes seem relatively minor in scope and consequence, and the sort of thing that just 'happens' as a relatively young product gets used, tested and refined.

Changes have been made, but everything that I know of is backward and forward compatible. I can tell you that SIG and Grayguns do not separate the P320 into a "Gen 1" or "Gen 2."