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Sig Sauer P365 9mm 12-Round Magazine


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Regular Price: $36.99

Special Price $34.49

Availability: In stock

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Sig Sauer P365 9mm 12-Round Magazine

Sig Sauer P365 9mm 12-Round Magazine

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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.

Additional Information

SKU MAG-365-9-12
UPC Code 798681583621
Caliber 9mm
Manufacturer Sig Sauer
Mag Capacity / Rounds 12rd
Accessory Rail Not Applicable
Warranty Warranty provided by Sig Sauer.

Product Questions

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.

Rate the answer?
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).

Rate the answer?
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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Customer Reviews

Good Product & Good Customer Service Review by Tom
Value
Quality
Price
I looked around and saw OCG had the best price and good reviews. So I ordered 3 mags. I got them in a few days, and they work well. I will definitely check this website before purchasing anything in the future. (Posted on 10/17/2019)
Awesome Review by Maohinui
Value
Quality
Price
Exactly what I needed. Fast shipping, received updates throughout the entire process, which I greatly appreciated. Highly recommend! Thanks! (Posted on 10/14/2019)
Great and Fast Service Review by RB
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Quality
Price
12 rounds mags are great and they keep the weapon very concealable. (Posted on 10/10/2019)
Exceptional Five Star Rating !!!! Review by Ross
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Quality
Price
Easy to navigate website, desired 12 round clips in stock.
Quick and easy online order and pay. Best prices on this product.
Instant email notifications for transaction, shipping and tracking information.
Product was a gift and arrived as advertised and needed. Exceeded expectations in all categories! (Posted on 9/22/2019)
Shipped immediately Review by Van
Value
Quality
Price
Order was processed almost as soon as it was received. Magazines (2) are genuine Sig and were in their original Sig boxes. I opted for the cheapest shipping method (USPS) and was surprised at how quickly the package arrived... only three days from placing the order until items were on my front porch. Osage had the best price and, even with shipping, ended up being about $7 cheaper than anyone else. I will definitely do business with them again. (Posted on 9/19/2019)
Excellent Review by Lynn
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What a great pleasure to work with such a outstanding company. Osage County Guns are very courteous and concerned about there customers. There prices are great and there shipping and delivery are second to none. Would highly recommend doing business with them again. (Posted on 9/2/2019)
Great value, performance, and service. Review by len
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Price
Ordered a 12 round magazine for my Sig P365 from Osage County Guns. The price was the lowest I could find, shipped same day. Took it to the range today and it ran flawlessly. Will be ordering from OCG again...

(Posted on 8/26/2019)
5 stars Review by curtis
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good quality, price and fast shipping. (Posted on 8/11/2019)
365 12 rounds magazine Review by Mark
Value
Quality
Price
Great price. Fast shipping. Sig Sauer factory magazine. (Posted on 7/27/2019)
12rd sig p365 magazine Review by Pete
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Quality
Price
Great mag. Pinky ext. feels great!
As advertised! Will be purchasing another one soon.. (Posted on 7/22/2019)
I am pleased with this product Review by Kevin
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Price
Good product at a good price, made by Sig for this pistol fits great. I already have mine in use, Thanks (Posted on 7/22/2019)
Satisfied Review by Orrett
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Price
Second one I’ve purchased since owning the p365. They work as advertised. (Posted on 7/8/2019)
Great product and fast shipping Review by Phillip
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Value
Quality
Osage shipped these fast, and they worked well in my P365. The springs are tight out of the box, and a loader is helpful until they break in. Great product and great job by Osage. (Posted on 7/2/2019)
Outstanding service, prompt delivery. Review by LP
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Value
Quality
Excellent online purchasing experience. I would definitely recommend it to my friends. (Posted on 7/1/2019)
Delivered fast Review by David
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Value
Quality
This is a true sig magazine not a knock off. Service was good they kept me informed throughout the shipping process. I chose economy shipping because it was free and wasn’t in a rush but ordered on Monday and received by Friday. Will do business with this site again. Thabk you.. (Posted on 7/1/2019)
Good product,good prices, fast shipping. Review by Tom
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Value
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Mags are good. Work very good service was great and very quick shipping. Will be buying again. Very satisfied. (Posted on 6/19/2019)
Good price, great commo, fast delivery. Review by Mac
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Value
Quality
Nothing but praise and high marks for this experience. Thank you. (Posted on 6/17/2019)
Great product! Review by Daileen
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Value
Quality
I now love my gun with this extended mag! So much easier to hold! (Posted on 6/16/2019)
Great mag & Excellent company Review by Marty
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Value
Quality
Company: no hassle, quick delivery (arrived 2 days before expected) would purchase from this company again.

Sig P365 mag: 12 round mag elevates this pistol from a great carry gun to an outstanding sidearm. Fills out the hand much better. I may buy 2 more and dump those 2 10 rounders. Shot 500 rds through the 12 rd mag without any malfunctions. Only gripe I have is that the spring takes a while to wear in to the point where I could get the last round in without turning blue in the face. (Posted on 6/9/2019)
All around great experience Review by Jason
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Value
Quality
Good customer service, good product, great price, and fast shipping (Posted on 6/5/2019)
Excellent merchant and product Review by Larry
Price
Value
Quality
Shipping was fast, product works great and is of excellent
Quality. The price was the best I saw. Would recommend them. (Posted on 6/3/2019)
Quality Product Review by Hayes
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Value
Quality
Great website, customer service and fast shipping. Quality Product as well. Thank you very much! (Posted on 6/3/2019)
Good product. Good price. Fast shipping. Review by David
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Price
Value
Good price. Fast shipping. (Posted on 5/26/2019)
Exactly as Described -quick ship - worked perfectly Review by Tony
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Price
Value
Awesome mags, identical to the ones I got with my pistol, work great. Very satisfied customer!!! (Posted on 5/26/2019)
EXCELLENT MAGS AND GREAT PRICE Review by DIEGO
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Price
Value
EXCELLENT MAGS AND GREAT PRICE (Posted on 5/22/2019)
Excellent mags! Review by Timothy
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Price
Value
Great OEM 12 round mags, fast shipping and excellent customer service. (Posted on 5/19/2019)
Genuine OEM Review by SteveZ
Quality
Price
Value
Sig Magazines came in plastic shell OEM packaging. Exactly what I wanted for the best price in town! (Posted on 5/19/2019)
Quality price and service Review by BiteDoc
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Price
Value
12 is better than 10 and provides a surer grip. Will be ordering more and appreciate the solid service. (Posted on 5/15/2019)
Great price Review by Manuel
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Value
I read through most reviews and agree that the price of the mags and shipping was outstanding. I paid for the 2 day shipping and it was worth it. Had tried ordering from another site and after a month I had still not received my message mags so I canceled my order and luckily found this site. (Posted on 5/15/2019)
Love it! Review by Mojeaux
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Value
Absolutely love the 12 round magazine as it helps me get a good grip on the small pistol that the P365 is. Love it! (Posted on 5/14/2019)
Factory magazines at wholesale pricing Review by RANDALL
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Value
Great company that offers quality products ts at a fair price.Quick shipping. Great communication. Very good pricing (Posted on 5/14/2019)
Great Sig mags Review by Jason
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Value
My P365 fits my hand so much better with the 12rd extended mag, much better control vs the 10rd mag. I bought two of them and am happy with them, and the best price on these was found here. (Posted on 5/9/2019)
SWEET! Review by Mark
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Value
No more dangling pinky finger and a far better overall hand/grip feel. Extremely fast and professional servive with superb tracking and follow-up! (Posted on 5/5/2019)
Excellent Sig quality as expected. Review by Chris
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Yes, the mags are not easy to load to capacity however mags for the Walther PPS M2 are also difficult as well as 10 round 1911 9mm mags. If we want better capacity in guns NOT designed to have a capacity like this we will have to suffer sore thumbs and mag loaders. (Posted on 5/5/2019)
Excellent Service and Price! Review by Jensen
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Originally placed an order with another company only for it to not have the mags in stock (but didn't not tell anyone or inform me when the order would be fulfilled). Cancelled my order with them and placed an order with Sig Sauer Guns. Couldn't be happier with my choice. Mags were in stock, at a great price, communication was excellent, and delivery was quick and easy. Basically everything you want in a vendor. (Posted on 5/2/2019)
Great product, easy ordering, and quick delivery. Review by James
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Value
Wanted to include the 12 round magazine to the 2 factory 10 round magazines, so I researched online looking for a factory magazine for a decent price. I found both at Osage County Guns. (Posted on 4/28/2019)
Really like the fit. Review by William
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Gotta say the fit in the hand is much better with the 12-rd mags. Makes shooting more comfortable, maybe a bit more accurate to boot. (Posted on 4/14/2019)
12 round Review by Curtis
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The turn around from when I order to when I get the product is amazing. I love the extra grip it gives my hand with the 12 round magazine in my P365. Great product and service. Best price too. Thanks (Posted on 4/11/2019)
Great product, great price, fast shipping Review by Kevin
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The 12 round mag is a must have. I have ordered 2. For those who say they can not get 12 rounds in it you need to use a speed loader. This is a very compact magazine. The spring is tough at first. It most deffinstely will hold all 12. I tried to order from another site similar to this one. They took my money. A week later emailed them to get the status of my shipment. They told me they were on back order. No notification, nothing. I had to send numerous emails to get a refund. These guys had in stock and shipped immediately. The price is even cheaper than when Sig's website had on sale a couple weeks ago. (Posted on 4/11/2019)
Top quality Authentic Sig Sauer Mag Review by Ken
Quality
Price
Value
Arrived in perfect condition, factory new and works flawlessly.
Quick and efficient service from Osage and at a price that was
more than reasonable. I highly recommend this item and this
Company.
(Posted on 4/10/2019)
P365 12 rounder Review by JB
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I ordered 2 of the 12rd mags for my everyday carry p365,as I’m a bigger guy I can conceal the p365 w/the 12rd mag and not imprint the gun!! (Posted on 4/10/2019)
Wow. Fast shipping Review by Frank
Quality
Price
Value
Osage is everything you would want for an online retailer. (I sure wish they were close to me.) Anyway, good prices, fast shipping, and product just as advertised. Great place to do business with. I will be back, for sure (Posted on 4/8/2019)
Nice price, fast shipping, what’re you waiting for? Review by Guy
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Price
Value
Factory fresh 12 rnd P365 magazine. Works like it should, was shipped quickly and at a fair price. Total cost was actually less than if I’d bought it over the counter at my local gun shop. Will definitely keep you guys in mind for my next purchase! (Posted on 4/5/2019)
Spring issue Review by Donald
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Price
Value
I bought 3. None will accept more than 11 rounds (Posted on 4/2/2019)
first puchase from osage county guns Review by richard
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Value
this was my first purchase from osage county guns. shipping was faster than any other product I have ever ordered with the lowest standard shipping rate. this was top quality service on a top quality product and I highly recommend osage county guns (Posted on 3/20/2019)
Fits my mitts Review by Dave
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Price
Value
I have large hands. My pinky folds under the 10-round flat mag, and just partially catches with the extended 10-round. With the 12-round, my pinky lands completely within the mag grip.

This was my first purchase experience from Osage County Guns and it was fantastic. The price was great and my new mags arrived sooner than I expected. Their notifications about order and shipping status are as good as any online retailer. I look forward to being a repeat customer! (Posted on 3/10/2019)
Great service and price Review by Dale
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Price
Value
This is, by far, the best deal for these magazines. I look forward to doing business with Osage County Guns again. Thanks! (Posted on 2/27/2019)
Fast service and great sale price. Review by Mike
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Price
Value
Original manufacturer's mags at highly discounted sale price. Fastest fulfillment and delivery. Highly recommend Osage County Guns. (Posted on 1/29/2019)
Great price - Fast Shipping Review by Marc
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Price
Value
I looked at a bunch of websites for this magazine and Osage had the best price and shipping cost. After the purchase, they provided numerous follow up emails and tracking notifications. In the end, this item arrived very quickly and I attempted to buy another one, but they were out of stock. Great retailer! (Posted on 1/28/2019)
Outstanding service. Great price Review by Ed
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Value
Outstanding service and communication as the purchase went thru the logistics and delivery process. Original product delivered on time and at a great price. (Posted on 1/20/2019)
12 is better than 10 Review by Jeremy
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Value
The price is what brought me to Osage and the customer service is what made me stay. The extended mag made a great gun better. I am now going to replace ALL my 10 round magazines for 12 rounds because of the quality and customer service. I have told me friends also and look forward to them doing the same. (Posted on 1/8/2019)

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