Description
The Kimber 1911 Magazine in stainless steel is engineered as a factory-direct replacement or backup for your full-size 1911 pistol. With 8-round capacity, you get an extra round compared to standard 7-round magazines without changing the grip profile of full-length 1911 frames. This magazine works reliably in Kimber Custom, Pro, Ultra+, and other full-size 1911-pattern pistols, as well as Colt Government and Commander models.
Built from Stainless for Durability
The entire magazine body is stainless steel construction, providing genuine corrosion resistance whether you're taking it to the range, into the field, or carrying it every day. A steel wire spring and flat steel follower work together to deliver smooth, consistent feeding across different ammunition profiles. The flush-fitting metal baseplate keeps things clean during draws while eight witness holes let you see at a glance how many rounds you're loaded with.
Designed for Real-World Use
Out of the box, new magazines can have stiff springs that require some breaking in before loading full capacity becomes easier. Customers regularly report flawless feeding and reliable performance once the magazine is run through some rounds. The pre-drilled basepad holes mean you can add Kimber base pad extensions or third-party options if you want additional features like grip extensions or competitive bumper pads. This magazine fits securely in standard 1911 magwells and feeds everything from FMJ ball ammo to defensive loads without fussiness.
Key Specifications
- Manufacturer: Kimber
- Manufacturer Part Number: 1000133A
- UPC: 669278101330
- Caliber: .45 ACP
- Capacity: 8 rounds
- Magazine Type: Full-length
- Material: Stainless steel body
- Spring: Steel wire
- Follower: Flat steel
- Baseplate: Flush-fitting stainless steel
- Features: Pre-drilled for base pad installation, witness holes
- Compatible Firearms: Kimber Custom, Pro, Ultra+, Colt Government, Commander, and mil-spec 1911 platforms
- Weight: 0.15 lbs
- Finish: Stainless
What’s Included
- 1x Kimber 1911 .45 ACP 8-round magazine
Frequently Asked Questions
Will this Kimber magazine work in other 1911 brands like Colt or Springfield?
Yes. This stainless magazine is compatible with Colt Government and Commander models as well as most mil-spec 1911-pattern pistols. While virtually all single-stack full-size 1911 magazines will physically fit, factory magazines like this one are tuned to your specific platform for best reliability. If you own a non-Kimber 1911, it's worth testing fit and feeding before relying on it for carry.
Is loading 8 rounds into a full-size 1911 magazine difficult?
New magazines typically have stiff springs, making it tighter to load the last round or two until broken in. This is normal and actually a good sign of spring strength. After shooting a few boxes of ammo through the magazine, loading becomes noticeably easier. Some people use a loading tool to take the strain off their thumbs.
Can I add a base pad extension or bumper to this magazine?
Yes. The magazine body is pre-drilled to accept aftermarket base pads and extensions. You can add a standard replacement baseplate, a slim bumper pad for carry, or a thicker competition-style pad depending on your needs and whether you use an extended magazine well.
What do the witness holes do?
The eight witness holes on the side of the magazine align with each loaded round, giving you a quick visual count of how many rounds are loaded without having to remove the magazine or look inside. This is especially useful in tactical or competitive scenarios where you need to know your ammunition status at a glance.






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