Description
When it comes to spare magazines, there's a real case for going with the factory option. Third-party mags can work fine, but with a pistol you're counting on, it's hard to beat having the exact same magazine the gun was designed around. This is Sig Sauer's own MAG-MOD-F-45-10, built to the same specifications, materials, and tolerances as the original magazine that came in the box with your P320 or P250 full-size.
The body is steel construction with a blued finish, and the internals are engineered to feed .45 ACP reliably. A high-tensile steel spring and anti-tilt polymer follower work together for smooth, consistent feeding, and factory-drilled witness holes along the body let you check your round count at a glance. The baseplate is removable for cleaning, which is worth noting if you rotate magazines regularly and like to keep them maintained.
This magazine fits the full-size frame only. It won't work in the compact or subcompact P320 or P250 grip modules, so just make sure your pistol runs the full-size configuration before ordering. It's also worth knowing that it will extend slightly below the grip on a subcompact frame if you're running one of those modular setups, though many P250 owners do exactly that without issue.
Sold individually. Whether you're building up your range bag supply or just want a reliable backup on hand, this is a straightforward, no-surprises addition for any full-size P320 or P250 owner.
Key Specifications
- Manufacturer: Sig Sauer
- MPN: MAG-MOD-F-45-10
- UPC: 798681505173
- Caliber: .45 ACP
- Capacity: 10 Rounds
- Pistol Fit: P250 Full-Size, P320 Full-Size
- Construction: Steel
- Finish: Blued
- Style: Detachable Box Magazine
- Quantity: 1
What’s Included
- 1x Sig Sauer P320/P250 Full-Size .45 ACP 10-Round Magazine
Frequently Asked Questions
Will this magazine work in a P320 Compact or Subcompact?
No, this is a full-size magazine and is designed specifically for the full-size P320 and P250 grip modules. It will not seat correctly in compact or subcompact frames in a standard configuration. If you're running a modular P250 or P320 build with a full-size grip module, it will work fine regardless of what slide or barrel you have installed.
Is this a genuine Sig Sauer factory magazine or an aftermarket product?
This is a genuine OEM magazine made by Sig Sauer, not a third-party or aftermarket replacement. It is manufactured to the same specifications, materials, and tolerances as the magazines that ship with the pistol from the factory. You're getting the exact same product Sig puts in the box.
Does the MAG-MOD-F-45-10 fit flush with the grip on a full-size P320?
Yes, on a standard full-size P320 or P250, this magazine is designed to seat flush with the grip. The flush-fit baseplate keeps the profile clean and snag-free. If you're using it in a modified or non-standard frame configuration, fitment may vary.
Can I use this magazine for range training or is it better saved for carry use?
It works great for both. Many P320 and P250 owners use these factory magazines as their primary range mags and carry spares, since they feed consistently and hold up well with regular use. Rotating through a few of these and keeping them clean is a solid approach whether you shoot for fun or carry daily.
How do I clean and maintain this magazine?
The polymer baseplate is removable, which makes field stripping the magazine straightforward. You can disassemble it, wipe down the interior and follower, check the spring for wear or debris, and reassemble. Routine cleaning every few range sessions is a good habit, especially if you shoot in dusty or wet conditions.






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