Description
The standard 7-round .45 ACP magazine is a classic, but there are plenty of situations at the range or in competition where having a few extra rounds in the gun just makes sense. This is Kimber's own factory 10-round extended magazine for full-size 1911 pistols chambered in .45 ACP, and it's built to the same standards as the magazines that ship with their guns.
Construction starts with a laser-welded stainless steel tube and a welded base plate, which makes for a tight, durable package that holds up to regular use without corroding or wearing down over time. Inside, an all-steel follower and high-tensile steel wire spring work together to keep rounds feeding cleanly and consistently. The wide-cut numbered witness holes on the side let you get a fast round count at a glance, which comes in handy during a course of fire or when you're staging mags at the bench.
Because this is a 10-round mag in a single-stack .45 format, it does extend slightly past the bottom of the frame rather than sitting flush. That's worth knowing going in. It's not a problem for range use or competition, but something to account for if holster fit matters to you.
Compatibility goes well beyond just Kimber pistols. This mag runs in Kimber Custom, Pro, and Ultra+ models with a full-length grip, and it also works in Colt Government and Commander pistols, plus essentially any mil-spec 1911 platform. If you've got a 1911 from another maker that runs standard mil-spec dimensions, there's a good chance this mag will drop right in.
Key Specifications
- Manufacturer: Kimber
- Manufacturer Part Number (MPN): 1100167A
- UPC: 669278111674
- Caliber: .45 ACP
- Capacity: 10 Rounds
- Finish: Stainless
- Material: Laser-welded stainless steel
- Spring: High-tensile steel wire spring
- Follower: All-steel follower
- Base Pad: Polymer base pad
- Witness Holes: Wide-cut numbered witness holes
- Fit: Full-length grip 1911 pistols
- Flush Fit: Extends beyond bottom of frame (not flush)
- Country of Origin: United States
- Compatible Models: Kimber Custom, Pro, Ultra+ (full-length grip); Colt Government, Commander; mil-spec 1911 platforms
What’s Included
- 1 x Kimber 1911 10-Round Stainless .45 ACP Magazine
Frequently Asked Questions
Will this Kimber 10-round magazine fit flush with the frame on my 1911?
No, it won't sit flush. Because it holds 10 rounds in a single-stack .45 ACP format, the magazine extends slightly past the bottom of the frame. It's a non-issue for range or competition use, but worth factoring in if you're planning to use a specific holster that requires a flush-fit mag.
What 1911 pistols is this magazine compatible with?
This mag is designed for Kimber Custom, Pro, and Ultra+ models with a full-length grip, but the compatibility goes further than that. It also fits Colt Government and Commander pistols, along with most standard mil-spec 1911 platforms from other manufacturers. If your 1911 runs mil-spec dimensions, it should work.
Is this a factory Kimber magazine or an aftermarket mag?
This is a genuine factory OEM magazine made by Kimber, part number 1100167A. It's built to the same specs and tolerances as the magazines that come in the box with new Kimber 1911s. For anyone who's had reliability issues with third-party 10-round mags in their Kimber, the factory magazine is typically the most reliable fix.
What makes this magazine more durable than a standard mag?
Kimber uses a laser-welded stainless steel tube and welded base plate, which creates a tighter, more rugged build than a typical seam-rolled magazine body. The all-steel follower and high-tensile wire spring also contribute to consistent feeding and long service life. The stainless steel construction resists corrosion, which matters if you shoot in humid conditions or don't always clean your gear immediately after the range.
Can I use this magazine for competition shooting?
Absolutely. Kimber designed this mag with target and competition use in mind, and the 10-round capacity is a real advantage in disciplines where round count matters. The numbered witness holes make it easy to track how many rounds you have loaded without fumbling around, which is a nice touch when you're moving quickly through a stage.





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