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If you run a .40 S&W Glock and need to stock up on spare mags without breaking the bank, the KCI USA Gen 2 15-rounder is worth a serious look. KCI has been making magazines since 1984, and their Gen 2 design addressed a lot of the complaints that followed earlier versions. The result is a magazine that looks and functions remarkably close to what Glock ships from the factory.
The construction uses a hardened steel insert bonded inside a polymer body, which gives the magazine structural rigidity without adding unnecessary weight. That steel liner is what separates KCI from a lot of other polymer-only aftermarket options, and it does make a difference in how the magazine holds up to regular handling and occasional drops. The spring is stainless steel and heat-treated for consistent tension, and the injection-molded polymer follower is designed to prevent tilting during the feed cycle.
One detail worth pointing out: the magazine includes rear-facing witness holes numbered from round four up, so you can check your count at a glance without stripping the mag. It's a small thing, but it's the kind of feature you appreciate when you're running drills or doing a quick inventory at the end of a range session. The floor plate design mirrors the factory Glock profile closely enough that most standard Glock-compatible baseplates and extensions will fit without modification.
Compatible with the Glock 22, 23, 24, 27, and 35, this magazine fits the full lineup of double-stack .40 S&W Glocks. It comes backed by KCI's limited lifetime warranty on manufacturing defects. These work great as range mags, training mags, or as backup spares to keep in rotation alongside your factory magazines.
This magazine is designed for double-stack .40 S&W Glock pistols, specifically the Glock 22, 23, 24, 27, and 35. It follows the Gen 2 Glock magazine pattern, so it functions across most generations of those models. If you are unsure whether your specific pistol uses a standard double-stack .40 S&W Glock magazine, check your owner's manual or the magazine well size.
The KCI Gen 2 is a close visual and functional clone of the OEM Glock magazine, including the rear-facing witness holes and similar floor plate dimensions. The key structural difference is that KCI bonds a hardened steel insert inside the polymer body, which adds rigidity. Most range shooters find performance to be comparable for training and practice sessions, though for critical or duty use, sticking with factory Glock magazines is the common recommendation.
The KCI Gen 2 magazines have a strong reputation as range and training mags. They are a popular choice for building out a deep magazine rotation without the cost of buying multiple OEM magazines. The steel-lined polymer body holds up well to normal range handling, and the anti-tilt follower keeps feeding reliable across a standard range session.
The KCI-MZ010 is designed to closely mirror the Glock factory magazine profile, and most standard Glock-compatible aftermarket baseplates and extensions will fit. That said, fitment can vary slightly by brand and product, so it is worth confirming compatibility with the specific baseplate or extension you plan to use before committing.
Yes, KCI USA backs this magazine with a limited lifetime warranty covering manufacturing defects. If you receive a magazine with a defect straight from the manufacturer, KCI USA's warranty program applies to all of their products. Warranty claims would go through KCI USA directly.
| UPC | 851586008214 |
|---|---|
| Manufacturer | |
| Manufacturer Part Number | KCI-MZ010 |
| Caliber/Gauge | .40 S&W |
| Capacity | 15 |
| Color | Black |
| Length | 6.6000 |
| Product Type | Magazine |
| Shipping Weight | 0.175 |
| State Restriction (CA) | NO DIRECT SHIP TO CALIFORNIA |
| State Restriction (OR) | NO SALE TO OREGON |
| State Restriction (RI) | NO DIRECT SHIP TO RHODE ISLAND |
| State Restriction (WA) | NO DIRECT SHIP TO WASHINGTON |
| Units per Box | 1 |
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