Description
This 18-round magazine is the extended capacity option for owners looking to increase their Kimber KDS9c firepower. Since the KDS9c ships with 15-round magazines by default, the 18-rounder adds three extra rounds without significantly impacting concealability. It uses Kimber's proprietary design specifically tailored to the KDS9c platform, making it the only compatible high-capacity option for this gun.
Kimber KDS9C Magazine Construction and Design
The magazine body pairs stainless steel construction with a black matte finish for durability and low-profile appearance. The rocket wire spring inside promotes smooth, reliable feeding under real-world conditions, while the polymer follower keeps rounds stacked evenly as the magazine cycles. An aluminum Type II anodized base anchors the whole assembly and can be quickly removed for internal cleaning, parts replacement, or maintenance without any tools needed.
Magazine Witness Holes and Reliability
Numbered witness holes run down the side of the magazine so you can count remaining rounds at a glance during shooting or training. This feature helps with load planning and keeps track of how many times you've cycled through ammunition. The design ensures consistent feeding across various ammunition types and weights, from range 115-grain full metal jacket to defensive loads.
Compatibility and Setup
Because the KDS9c uses a proprietary magazine design, this 18-rounder only fits Kimber KDS9c pistols. The magazine seats firmly in the gun and releases cleanly when pressing the reversible mag release. Many owners keep multiple magazines on rotation for range days and training, and having at least one high-capacity option rounds out a complete setup.
Key Specifications
- Caliber: 9mm
- Capacity: 18 rounds
- Manufacturer: Kimber
- Model: KDS9C
- MPN: 1500217A
- UPC: 669278152172
- Material: Stainless steel with aluminum base
- Spring Type: Rocket wire spring
- Follower: Polymer
- Base: Aluminum Type II anodized, removable
- Finish: Black matte
- Compatibility: Kimber KDS9c pistols only
- Witness Holes: Numbered side-facing
What’s Included
- 1 x Kimber KDS9C 18-round magazine
- Rocket wire spring
- Polymer follower
- Removable aluminum anodized base
Frequently Asked Questions
Will the KDS9C 18-round magazine fit my KDS9c pistol?
Yes, this magazine is designed specifically for Kimber KDS9c pistols. The KDS9c uses a proprietary magazine design, so only Kimber-made magazines will function with this platform. The 18-rounder replaces the standard 15-round magazine that ships with the KDS9c, providing an extra three rounds of capacity.
How do I clean and maintain this magazine?
The removable aluminum base makes maintenance simple. Unscrew the base from the magazine body, and you can easily inspect and clean all internal components. After cleaning, reassemble, apply a light coat of gun oil to the spring, and you're done. This design lets you perform maintenance without specialized tools.
Can I use this KDS9C magazine with other pistols?
No, this magazine is exclusive to the Kimber KDS9c. The proprietary design means it will not function with other 9mm pistols, even those from other manufacturers. Only use this magazine in compatible KDS9c firearms.
What do the numbered holes on the side do?
The witness holes let you visually count how many rounds remain in the magazine without unloading it. Each hole aligns with a specific round count, so you can tell at a glance whether you have a full magazine, half full, or just a few rounds left. This is especially useful during training or tactical practice.






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