KCI USA 10/15-Round Magazine — .40 S&W, Black, Hardened Steel/Polymer (KCI-MZ049 | KCIMZ049 | UPC 851586008511)

Full-size .40 performance with capacity for restricted states. The KCI USA 10/15rd Magazine uses a standard 15-round body that’s permanently blocked to 10 rounds for compliance in capacity-limited jurisdictions—while preserving the familiar handling of full-size .40 S&W platforms. Built with a hardened steel liner wrapped in a durable polymer shell, this magazine offers dependable feeding, drop resistance, and long service life at a value-forward price point.

Why Choose the KCI USA 10/15rd (Blocked to 10)

• Compliance-ready: 10-round limit in a full-size body helps meet restricted-state rules while maintaining ergonomic control and reload consistency.

• Hybrid construction: Hardened steel internal body supports feed-lip integrity; overmolded polymer resists impacts and environmental wear.

• Reliable cycling: An anti-tilt follower and heat-treated steel spring promote consistent feeding across common .40 S&W bullet weights (155–180 gr).

• Serviceable design: Removable floorplate simplifies cleaning after sandy training bays, rain, or high-round-count classes.

• Budget-smart: KCI USA quality at a price that lets you outfit a full training loadout without compromise.

Compatibility: Designed for full-size .40 S&W pistols that accept a 15-round pattern magazine (e.g., Glock® 22). Also functions in compact models (e.g., G23) with extended length and subcompacts (e.g., G27) with significant extension. Not for Slimline models or non-.40 S&W pistols. Always verify fit and function in your specific firearm.

Key Specifications

• Brand/Model: KCI USA — 10/15rd Magazine (blocked to 10)

• Caliber: .40 S&W

• Capacity: 10 rounds (permanently blocked from 15)

• Body: Hardened steel liner with polymer overmold, black

• Feed Lips: Steel (integral to liner)

• Spring: Heat-treated steel

• Follower: Anti-tilt polymer

• Floorplate: Removable

• Part Numbers: KCI-MZ049 / KCIMZ049

• UPC: 851586008511

Performance You’ll Notice

• Positive seating & lock-back: Proper geometry and spring tension help ensure confident insertion and consistent slide lock on empty.

• Drop-free ejection: Precise molding promotes clean, drop-free reloads from most frames for faster, more reliable mag changes.

• Weather-resistant durability: Steel/polymer hybrid construction stands up to heat, cold, oils, and regular cleaning solvents.

Ideal Use Cases

• Compliance-conscious carry: Keep full-size handling while adhering to 10-round limits.

• Training & classes: Stock multiple mags for efficient reps, transitions, and reload drills.

• Home defense: Pair proven magazines with vetted .40 S&W ammunition and routine function checks.

Setup & Best Practices

1. Initial inspection: Check the body, feed lips, and follower; hand-cycle a few dummy rounds to verify smooth presentation.

2. Function test: Load to 10; confirm seating on a closed slide, slide lock on empty, and drop-free behavior.

3. Ammo vetting: Run your preferred practice and defensive loads; mark reliable mags (paint pen/numbering) to manage rotation.

4. Rotation plan: Alternate magazines to even spring wear over time.

Maintenance & Care

• Clean regularly: Remove floorplate, follower, and spring; wipe debris; reassemble dry or with a light silicone cloth.

• Monitor springs: Replace if you notice sluggish feeding or inconsistent lock-back after heavy use.

• Store smart: For long-term storage, many shooters prefer unloaded or partially loaded; modern springs tolerate routine use well.

Legal & Safety Notes

• Know your laws: This magazine is blocked to 10 rounds; verify it meets all local/state requirements (including “permanent” block criteria).

• Safe handling: Always ensure your firearm is unloaded before maintenance.

• Live-fire validation: Thoroughly test each magazine before relying on it for defense.

SEO Highlights (For Shoppers & Merchandisers)

• Primary Keywords: KCI USA 10/15rd .40 S&W magazine, KCI-MZ049, KCIMZ049, UPC 851586008511, blocked to 10 rounds.

• Related Keywords: .40 S&W full-size magazine 10-round, state-compliant 40 cal mag, steel-lined polymer magazine, Glock 22 10-round magazine compatible*.

• Value Propositions: Compliance-ready capacity, steel-reinforced reliability, anti-tilt follower, heat-treated spring, easy maintenance, outstanding value.

*Check your pistol’s compatibility and always verify function.

What’s in the Package

• KCI USA 10/15rd (Blocked to 10) Magazine — .40 S&W, black, hardened steel/polymer (KCI-MZ049 / KCIMZ049)

• Factory packaging with basic care instructions

Stay compliant without sacrificing performance. The KCI USA 10/15rd .40 S&W Magazine delivers reliable feeding, durable construction, and full-size handling—ideal for training, defense, and everyday use in capacity-restricted regions.

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