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Sig Sauer P365 9mm 12rd Magazine

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Sig Sauer P365 9mm 12rd Magazine


Availability:Out of stock

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Sig Sauer P365 9mm 12rd Magazine. These magazines are now compatible with the P365 XL!


Are you shopping for P365 XL 12rd Magazines? These magazines now include the second floor plate that makes them compatible with both regular P365 pistols as well as the P365 XL! These magazines will be stiff and some customers find them difficult to load. We recommend using a Maglula Uplula magazine loader.

This is a brand new OEM Sig Sauer P365 9mm 12-Round Extended Magazine.

Sig Sauer designed the P365 magazine first and then engineered the firearm around the magazine. The firearm and magazines are extremely small. Because of the size of the magazine and capacity, the springs are stiff.

Please note that these magazines are extremely difficult to load. We have received a number of complaints and inquiries from customers that believe the magazines are defective or have incorrect springs. The mags are not defective but due to the very compact nature of the magazines, the springs are very tight when new. The magazines will loosen up some over time with use. Using a mag loader will help as well.

Also note that we have had a few inquiries from customers regarding marks or what appears to be wear on the magazines. We have observed that quite a few of the magazines have minor marks that appear to be from testing. We called Sig they confirmed they do batch test magazines that could account for some of the marks on the magazines.

Frequently asked questions about the P365 12rd magazines:

Q: Your website says these are in stock. Are they really in stock? A lot of other dealers say they are in stock but then after ordering it turns out they are not in stock.
A: If our website says they are in stock, they are in stock. It is really sad that it is necessary to even have this as a FAQ item but we receive multiple phone calls every day because so many other dealers suck at what they do (or are drop shipping from a distributor) and don't really have them. This often happens with drop shipping because the dealers list inventory at their distributor and they really don't have a handle on what they have listed on their website. We stock all of our inventory in house and don't rely on distributors to fill your order after you order it.

Q: How are you selling these so cheap? Are they real Sig OEM magazines?
A: We buy these magazines by the pallet and that allows us to pass on savings to you. These are OEM Sig Sauer magazines and not a third party knock off magazine.

Q: Is this compatible with the P365 and P365XL?
Yes. Sig Sauer is now shipping these magazines with a flush-fit floorplate for the P365XL as well as the extended floorplate for the standard P365.  We have seen either floorplate preinstalled from the manufacturer.  You may need to swap out the floorplate depending on which gun you have (XL or non-XL) and which floorplate Sig Sauer installs at the factory.  The extension piece is only for the standard P365.

Q: The last couple rounds are difficult to load by hand.  What do I do?
A: The springs on the 12 and 15 round magazines are stiff, especially at first.  Sig Sauer suggests loading the magazine with as many rounds as you can and let the magazine sit for a couple weeks to help break in the spring.  The magazine should feed just fine, but it does take time before it's easier to hand load. Some customers may still find it difficult. We recommend using a Maglula Uplula magazine loader or another loader of your choice.

Q: I have a P365XL.  What do I do with the 2-piece basepad?
Nothing. The 2-piece pad is only for the standard P365 and is not used on the P365XL.  The magazine is the identical to the 12rd magazine that ships with your XL when configured with the flushfit XL floorplate Do not attempt to stack the P365 floorplate on the magazine body and insert it into your P365XL.  You will fail to lock the magazine into your gun and it could fall out and hit your foot.  That could hurt.  We don't want you to get hurt.

Additional Information

SKU MAG-365-9-12
UPC Code 798681583621
Caliber 9mm
Manufacturer Sig Sauer
Trigger Pull SA No
Trigger Pull (DA) No
Overall Length No
Overall Height No
Overall Width No
Sights (detailed) No
Sight Radius No
Weight Empty No
Grips No
Frame Finish No
Frame Material No
Slide Finish No
Stock Material No
Barrel Length (in) No
Rifling No
Number of Grooves No
Mag Capacity / Rounds 12rd
Number of Mags No
Sound Reduction No
Accessory Rail Not Applicable
Features No
Safety (detailed) No
Competition Approval No
Magazine Well No
Additional Info No
Bullet Type No
FFL Requirements No
Warranty Warranty provided by Sig Sauer.

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Product Questions

Hello do these come in individual Sig Sauer boxes or are they sold in Bulk? Tim

Referenced product: MAG-365-9-12

These mags come in Sig's OEM packaging meaning their retail packaging. That is normally a box with clam shell but some of their other mags come in Sig logo bags. I believe these specifically, as of this response, come in the box with plastic clam shell.

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is this 12 rd 365 sig mag oem

Referenced product: MAG-365-9-12

Response Date: Feb 7, 2019

These are Sig Sauer brand magazines in Sig packaging. They are not third party mags.

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can you ship a sig sauer extended 12 rd magazine to maryland?

Referenced product: MAG-365-9-12

Response Date: Feb 15, 2019

Unfortunately due to Maryland's laws, we're unable to ship magazines with capacity greater than 10rd into Maryland.

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Will these be back in stock anytime soon and will the sale continue?Thanks,Artie

Referenced product: MAG-365-9-12

Response Date: Mar 5, 2019

As of this response, we've still got over 700 of these magazines in stock with additional shipments coming. The pricing will vary from time to time but we encourage you to order now if you want to take advantage of the sale.

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Are these the first edition 12 rd. mags where they had problems with, or are these the newer improved 12 rd. mags, working flawlessly?

Referenced product: MAG-365-9-12

Response Date: Mar 16, 2019

We aren't aware of any widespread issues with the 12rd magazines but these were received from Sig Sauer within the last 45 days.

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I have the P365 in coyote tan, do you have the 12 rounds magazine in this color?

Referenced product: MAG-365-9-12

Response Date: May 21, 2019

At this time Sig is not offering Coyote colored mags. We've been inquiring frequently and if they become available we will place an order and stock them.

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Will this 12 rounder fit the 365 XL

Referenced product: MAG-365-9-12

Response Date: Jul 23, 2019

This won't fit the P365 XL. We're expecting Sig to release updated magazines soon or floor plates to convert these magazines.

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Do you have the p365 12round extended mags in tan color?

Referenced product: MAG-365-9-12

Response Date: Aug 20, 2019

We will have P365 magazines in coyote tan in the next 30 to 60 days.

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Any Sig P365 mags available in Coyote Tan? I have the Tan NRA model. I've purchased from you before.Mark in Boise

Referenced product: MAG-365-9-12

Response Date: Aug 20, 2019

We will have Coyote P365 magazines in the next 30 to 60 days as well as Coyote grip modules. We will have all four variants of the magazines (10 flush / 10rd extended / 12rd / 15rd).

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Do these include the XL base

Referenced product: MAG-365-9-12

Response Date: Sep 12, 2019

These do not yet include the XL base. You can contact Sig and we've been told that they will send the base to you. In the future they may include it with the magazines.

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Write Your Own Review

You're reviewing: Sig Sauer P365 9mm 12rd Magazine

Customer Reviews

  • Great purchase
    Review by Ronon 7/28/2020
    I just got done putting 150rds through two of these yesterday with no feed issues. Good strong springs that made reloading a little work but once again no feed issues. Snug solid fit during magazine exchanges with no issues.
  • Sig Sauer P365 12 Round Magazines
    Review by Edon 5/21/2020
    This is the second time that I have ordered these magazines from OCG. They are FACTORY magazines not knock offs,
    They arrived in a timely manner also.
    These magazines are perfect!!! No jams or misfeeds with approximately 100-150 rounds through each magazine.
    I have already told others about OCG. They always seem to have theses magazines on stock.
    Thanks OCG!!
  • Twelve round sig p365 mag
    Review by Mikeon 4/8/2020
    I’m happy with the purchase and service. All went how it should’ve.
  • Twelve round sig p365 mag
    Review by Mikeon 4/8/2020
    I’m happy with the purchase and service. All went how it should’ve.
  • OCG-APP by far One of the best retailers out there
    Review by Reneon 3/24/2020
    As advertised, brand new items with their original packing. Competitive prices on all their products, top notch service order processing and shipping was fast and accurate.
  • 12 rd magazine sig sauer p365
    Review by Kip Rouse on 3/16/2020
    Excellent service and fast shipping... working great, highly recommend these.
  • First time customer – future lifelong customer
    Review by Kyleon 3/10/2020
    First time customer, easy buying experience I was really amazed at how fast the product arrived after placing my order. Exactly as advertised brand new factory original and for a great price. Definitely buying again in the future.
  • As Always - Recommend
    Review by Mikeon 2/19/2020
    As always, fast and accurate fulfillment. Product was first quality new OEM.
  • Would Definitely Reccomend
    Review by Billon 2/13/2020
    Good prices, fast shipping, and great communication
  • Outstanding Service
    Review by MSFon 1/27/2020
    Like others have said, great price on mags and very quick shipping. These are mags are hard to find nowadays due to the popularity of the Sig P365. Very happy that Osage had them in stock ! BTW - These are factory OEM mags not 3rd party made. I was kept in the loop during the whole process (by email) from order confirmation to shipping info and finally delivery.
  • Great Service
    Review by TK40YRon 1/19/2020
    Great price on a hard to find magazine. Shipped quickly. Kept informed of progress. I'll be back for more. Couldn't ask for more.
  • Buy these magazines
    Review by JGon 11/30/2019
    Perfect OEM Sig magazines. Great price, and very fast shipping.
  • SIG P365 12Rnd Magazine
    Review by Leoon 11/20/2019
    This magazine is very well made and functions perfectly!
  • Good fit
    Review by Fishman220 on 10/14/2019
    They fit well. They add the perfect length to the grip for the size of my hand. I haven’t used them yet, so I cannot address functionality.
  • Perfect fit!
    Review by Gibberon 10/2/2019
    The 12-round magazines are a perfect complement to the Sig P365, fits my hand perfectly. Osage purchase and shipping experience perfect as always, great MIL/LEO supporter!
  • Sig P365 12 round mag
    Review by Tarheelon 10/2/2019
    Excellent product, quick shipping Osage knows customer service and satisfaction. Try to do all my business exclusively through them.
  • Perfect, of course
    Review by Mikeon 9/29/2019
    Both buying experience and product quality were just as expected, perfect.
    Review by BJon 9/22/2019
    Actually, I was rather amazed at the rapid and very helpful responses. I got just what I wanted, at the price I wanted, with no delay and no hassle. with another deal like this, I may buy another one.
    I do wish they had LH holsters for my guns.
    Review by BJon 9/22/2019
    Actually, I was rather amazed at the rapid and very helpful responses. I got just what I wanted, at the price I wanted, with no delay and no hassle. with another deal like this, I may buy another one.
    I do wish they had LH holsters for my guns.
  • Produst is great ... Customer servive is great.
    Review by Nealon 9/2/2019
    The shipping was very fast. A good product and a reasonable price with customer service that is truly outstanding.
  • Produst is good ... Customer servive is great.
    Review by Sargon 8/12/2019
    A good product and a reasonable price with customer service that is truly outstanding.
  • Service outstanding
    Review by Warren on 7/14/2019
    Service was fast item as described. These Sig magazine the last round was hard to load . But eventually it did .
  • excellent
    Review by Richon 7/11/2019
    Excellent product at an excellent price with excellent service. I love this place.
  • Great experience
    Review by Billon 6/26/2019
    First time customer. I will be back. Pricing was great. Order process was smooth. Product arrived quickly. Great experience.
  • 5 stars
    Review by lynnardon 6/16/2019
    great mag the gun fits my hand better with it and it works
  • Fantastic Experience
    Review by D Wilsonon 5/28/2019
    I chose to purchase from Osage County Guns because their pricing was fair. The purchase process went smoothly and the communication was TOP NOTCH!! As soon as they received my creds, they let me know and the purchase went through quickly. The mags made it to CA without a problem and in the time I was promised. I've already recommended Osage to a couple peers and will continue to refer others and purchase from them in the future. THANKS!!
  • More comfy grip
    Review by ClaytownUSAon 5/26/2019
    The 12 rd mag is great. It fits most comfortably in my hand with this grip extension. Also, this is best price I've seen by far. Osage County Guns is great, I'd highly recommend.
  • Great Mag
    Review by JMCon 5/17/2019
    Great mag...good price...excellent weapon
  • 12rd magazines - Excellent product and service
    Review by SIG P365 Guyon 5/4/2019
    12rd Magazines arrived FAST and in excellent condition. OEM at a great price. Recommend and will purchase again!!
  • Great prices, quick shipping, great products
    Review by Old guyon 4/11/2019
    The 12 round sig p365 mags give me a better purchase on the handgun and the 2 extra rounds do not hurt.
  • Sig Sauer P365 12 Rd Mag
    Review by Msloop74on 3/28/2019
    Great price. Fast shipping. Not just 2 rds more capacity, but more comfortable grip with extension. A must have.