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P250 vs. P320 mags (?) Login/Join 
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Is there a definitive discussion anywhere on the interchangeability of the Sig P250 vs. Sig P320 magazines? I've seen lots of opinions online but nothing with factual data. Apparently Sig Arms isn't too helpful either. There are discussions about Gen 1 and Gen 2 and round hole base pad vs. square hole base pad but nothing definitive. I'm looking to buy some used mags for my Gen 2 Model 320 Compact but I want to make sure they will fit.
 
Posts: 292 | Location: South Carolina | Registered: March 16, 2011Reply With QuoteReport This Post
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I'm 99% sure they're interchangeable, as are the grip frames.

Only caveat being that you may need to change/modify the base plates for the different 'generations'




The Enemy's gate is down.
 
Posts: 16198 | Location: Spring, TX | Registered: July 11, 2011Reply With QuoteReport This Post
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My P250 mags fit in my P320 just fine and vice versa
 
Posts: 259 | Location: Central Florida | Registered: December 09, 2011Reply With QuoteReport This Post
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quote:
Originally posted by GrumpyMCO:
My P250 mags fit in my P320 just fine and vice versa


Are they both the same generation (Gen 1 or Gen 2)?
 
Posts: 292 | Location: South Carolina | Registered: March 16, 2011Reply With QuoteReport This Post
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"Gen 1" vs. "Gen 2" only refers to the P250. There's no such thing as a "Gen 1" vs. "Gen 2" P320, but there is a slight difference between the standard P320 grip modules and X-Series P320 grip modules.


So across the P250 and P320, there are basically 3 styles of mags. (Actually just baseplates; the mag body hasn't changed.)

1) Early Gen 1 P250 mags. These will only work with really early P250 grip modules. You're extremely unlikely to run across these, unless you're buying used mags off an early P250 adopter who never upgraded his P250. These have a thick floorplate with no "wings" and a slight lip around the front, and have a round retention plug on the bottom.



2) Later Gen 2 P250 and early P320 magazines. These are by far the most common P250 magazines, and were also used for P320s up until mid-2018ish. These have a thinner flat baseplate with two "wings"/"ears" that protrude up from the base, and have a round retention plug in the bottom. These are what came with nearly all P250s. They are compatible with "Gen 2" P250s, as well as with all standard P320s, but won't work the P320 X-Series grip modules without modification or replacement. If you want to get them to work with X-Series grip modules (X-Five, X-Carry, X-Compact, etc.) you'll have to snip off or grind down the two ears, which is easily done. Almost all P250 mags you'll find will be this style, as well as most used P320 mags.



3) Newest P320 magazines, which look similar but have thinner "wings"/"ears", and have a square retention plug in the bottom. These are the newest iterations, introduced a couple years ago. These will work with "Gen 2" P250s, as well as all P320 grip modules, including the X-Series. Nearly all magazines you buy from a store or online shop these days will be this latest style.

(New square plug on top; old round plug on bottom)




Also note that these three different baseplate variations only apply to Full Size and Compact magazines. With Subcompacts specifically, there were no "Gen 1" P250 Subcompacts, nor are there any X-Series P320 Subcompacts. So all P250/P320 Subcompact mags will work in any P250/P320 Subcompact.
 
Posts: 33291 | Location: Northwest Arkansas | Registered: January 06, 2008Reply With QuoteReport This Post
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All mine are Gen 2 mags, and I've read that only the Gen2 P250 Mags are compatible with the P320.

quote:
Originally posted by les45:
quote:
Originally posted by GrumpyMCO:
My P250 mags fit in my P320 just fine and vice versa


Are they both the same generation (Gen 1 or Gen 2)?
 
Posts: 259 | Location: Central Florida | Registered: December 09, 2011Reply With QuoteReport This Post
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quote:
Originally posted by RogueJSK:
"Gen 1" vs. "Gen 2" only refers to the P250. There's no such thing as a "Gen 1" vs. "Gen 2" P320, but there is a slight difference between the standard P320 grip modules and X-Series P320 grip modules.



Thanks for this info. It is the most comprehensive that I've seen and it answers my questions about the mags. I would point out that, although there is no formal designation by Sig of a Gen1/Gen2 version of the P320, most people use those terms to delineate the evolution of the change in the slide catch which also affected the grip modules. In addition, there were other minor changes to other parts of the gun in that same time frame.
 
Posts: 292 | Location: South Carolina | Registered: March 16, 2011Reply With QuoteReport This Post
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