KCI USA Gen 2 Glock-Compatible .45 ACP 26-Round Extended Magazine - KCI-MZ013
Product Description
Maximizing the payload configuration of a heavy-hitting .45 ACP sidearm or pistol-caliber carbine (PCC) frequently hits a clear physical and logistical bottleneck: low capacity limits. Standard factory flush-fit magazines stop at 10 to 13 rounds, cutting down active training volume and forcing shooters into frequent manual reloading splits on the range. Furthermore, low-tier, completely unreinforced plastic extensions can flex out of parallel under heavy spring tension, causing geometry lips to slip and trigger catastrophic double-feeds or nose-diving jams. The **KCI USA Gen 2 Glock-Compatible .45 ACP 26-Round Extended Magazine (KCI-MZ013)** completely eliminates these platform vulnerabilities, packaging an ultra-rugged steel-lined spine inside a heavy-duty polymer exoskeleton built to deliver double the fire capacity of standard feeds.
Precision-manufactured inside KCI's advanced engineering facilities, this highly affordable aftermarket option features a rugged, factory-style dual-layered architecture. The interior core is formed from a heavy-gauge, hardened steel liner insert that provides unwavering structural stiffness. This steel framework is encased within a high-impact, abrasion-resistant smooth polymer shroud, protecting the entire tube against drop cracks, extreme field transit friction, and chemical bore cleaning solvents. This metal-reinforced structure prevents the feed lips from spreading or shifting outward under heavy internal pressures, ensuring the round stack stays properly aligned for predictable vertical tracking through high-velocity firing strings.
In high-volume training blocks, dynamic tactical drills, or extended range sessions, the inner mechanics of this 26-round extended powerhouse guarantee fluid tracking continuity. The mag channel features an optimized frictionless polymer follower driven by a heavy-duty, custom-wound chrome silicon wire compression spring that delivers unyielding upward velocity from the first loading snap down to final-round slide lockback. Outfitted with rear-facing witness ports for fast, at-a-glance payload identification, an easily removable baseplate for simple armorer detailing, and full compatibility with factory floorplate options, this high-capacity engine completely doubles your platform's tracking capability.
*Armorer Bench Notes & Technical Maintenance Guidance: The KCI USA KCI-MZ013 extended magazine is explicitly optimized to fit all double-stack .45 ACP Glock pattern handguns—including the **Glock 21, 21SF, 30, 30S, 30SF, 36, and 41** across all generations—and it is fully cross-compatible with 45-caliber pistol-caliber carbines that feed from G21 blocks (such as the Kriss Vector, Ruger LC Carbine, and Extar platforms). Important Break-In Advisory: Due to the incredibly stiff structural tension of the factory-fresh chrome silicon spring, loading the magazine to its full 26-round capacity can be difficult during initial range sessions. It is highly recommended to use a mechanical speed loader, fill the tube to half capacity (12–15 rounds), and leave it staged overnight to let the internal coil settle and set its tension memory path. For preventative field care, slide the polymer base cushion free using a punch tool, brush away loose unburnt powder scale, and ensure the inner steel rails remain dry and completely free of wet synthetic gun oils, which turn environmental trail grit into a sticky, slow-moving paste.
Key Features
- Double-Fire Extended Capacity: Expands your payload tracking up to a staggering 26 rounds of .45 Auto, cutting out range-time reload splits and maximizing tactical drill volume.
- Hardened Steel Liner Shroud: Built around a structural core sleeve of premium hardened carbon steel to permanently block feed-lip spreading and body warping under pressure.
- High-Impact Exterior Polymer: Encased in an industrial-grade, texturized black polymer coat that cushions against severe impact shocks and resists aggressive weapon cleaning solvents.
- Tempered Chrome Silicon Spring: Outfitted with a heavy-duty, heat-treated wire wire spring matrix that supplies steady vertical tracking to feed heavy projectiles cleanly.
- Universal Glock 45 Cross-Fitment: Drops cleanly into full-size, compact, or sub-compact double-stack .45 ACP Glock magwells and corresponding magazine accessories natively.
Product Specifications
- Brand: KCI USA, Inc.
- Model Line: Generation 2 High-Capacity Aftermarket Series
- MPN/SKU: KCI-MZ013 (Also tracked as KCIMZ013)
- UPC Code Profile: 851586008207
- Caliber Focus: .45 ACP (.45 Auto)
- Capacity Configuration: 26 Rounds (Extended Stick Geometry)
- Body Architecture: Hardened Steel Inner Sleeve Encased in High-Tech Impact Polymer
- Enclosure Finish Color: Non-Reflective Matte Black Finish
- Baseplate Profile: Removable Standard Flush Polymer Baseplate (Accepts Glock Accessories)
- Follower Style: Precision-Contoured Anti-Tilt Polymer Follower
- Spring Composition: Heavy-Duty Heat-Treated Chrome Silicon Compression Wire
- Primary Pistol Integration: Glock G21, G30, G41 (All Generations 3, 4, and 5)
- Secondary Model Cross-Fitment: Glock G21SF, G30S, G30SF, G36, Kriss Vector .45, Ruger LC Carbine .45
- Payload Status Indicators: Rear-Facing Single-Round Witness Inspection Ports
- Overall Unit Mass: 0.30 lbs (Featherweight Unloaded Mass)
- Country of Manufacture: South Korea / Finished in USA
