Description
This is the real deal—a genuine Colt factory replacement magazine made to the same exacting standards as the magazines shipped with new Colt 1911 Government and Commander 9mm pistols. You get what you pay for with OEM parts, and this mag proves it with stainless steel construction throughout.
The magazine features a laser-welded stainless steel body paired with a flat steel baseplate that sits flush with the gun's grip. Inside, you'll find a high-tensile steel spring and stainless steel follower that keep rounds aligned and feeding smoothly from shot to shot. Reinforced feed lips are precision-machined to fit snugly in the magazine well, while numbered witness holes let you do a quick visual round count without unloading. The whole design is built to handle the specific demands of 9mm in a single-stack 1911 platform.
These mags hold 9 rounds and work in both full-size Government models and 4.25-inch Commander variants—they share the same magazine size. If you run a Colt 1911 in 9mm, keeping multiple OEM mags on hand is simply the smart move. New pistols often ship with just one, and having backup magazines means more range time and better reliability when it matters.
Key Specifications
- Manufacturer: Colt
- Model: 1911 Government/Commander
- Caliber: 9mm Luger
- Capacity: 9 Rounds
- Material: Stainless Steel
- Finish: Stainless Steel
- Body Construction: Laser-Welded Stainless Steel
- Baseplate: Flat Steel (Flush-Fitting)
- Follower: Stainless Steel
- Spring: High-Tensile Steel
- Feed Lips: Precision-Machined Reinforced Steel
- Features: Numbered Witness Holes for Round Count
- UPC: 098289100344
- MPN: SP945381-RP
- Type: OEM Factory Magazine
What’s Included
- One 1911 9mm 9-round magazine assembly
Frequently Asked Questions
Will this magazine work in my 1911 Commander and Government models?
Yes. Both the Commander (4.25-inch barrel) and Government (5-inch barrel) models use the same full-size magazine. This 9-round magazine fits both without any issues.
Is this compatible with other 1911 brands besides Colt?
This magazine is designed and manufactured to Colt specifications. While it may fit some other 1911 platforms, we recommend confirming compatibility with your specific pistol before purchasing. Colt-specific tolerances are tight for optimal performance.
How does this compare to aftermarket 9mm magazines?
Colt OEM magazines are factory-made using the same materials and manufacturing processes as those shipped with new guns. They're built to Colt's exact specifications and tolerances. Many owners prefer OEM mags for peace of mind with proven reliability.
What makes this magazine different from Officer or Compact models?
This is a full-size magazine for Government and Commander models. Officer and Compact 1911s use shorter magazines that hold fewer rounds. Don't mix them up—using a short-capacity mag in a full-size gun won't cause problems, but using a full-size mag in a compact frame can cause feeding issues.
Can I use this magazine in other calibers?
No. This magazine is designed specifically for 9mm Luger cartridges. Colt makes separate magazines for .45 ACP and .38 Super in similar configurations. Always use the correct caliber-specific magazine.
Do I need multiple magazines for my 1911?
Most owners recommend at least three to four magazines per gun. If your Colt came with just one or two, having backup magazines lets you practice more at the range and gives you fully loaded spares ready to go.





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