Sale

KCI USA FOR GLOCK 17/34/19/26 MAGAZINE - 9MM - 10 ROUND CAPACITY - 33 ROUND BODY - BLACK

KCI USA
MPN:
KCI-MZ008
UPC:
851586008238
$28.69 - $31.69
(13 reviews)
Current Stock:

The KCI USA 10/33 Magazine for Glock 17, 34, 19, and 26 delivers full-size 33-round ergonomics in a California-compliant 10-round capacity, giving Golden State shooters a comfortable grip extension without sacrificing legal compliance.

  • California-compliant 10-round capacity in a 33-round extended body
  • Fits all Glock 9mm pistols including models 17, 34, 19, and 26
  • Reinforced steel feed lips ensure reliable, jam-free feeding cycles
  • Durable polymer construction keeps the magazine lightweight and tough
  • Ergonomic extended baseplate improves grip and control while shooting
  • Rigorously tested for consistent performance across thousands of rounds

Who This Is For

This magazine is ideal for California-based Glock 9mm owners who want the full-size feel and improved grip of an extended magazine while staying within state-mandated capacity limits. It suits competitive shooters, range enthusiasts, and everyday carriers who own compact Glocks like the G19 or G26 and want a more comfortable, full-hand grip without modifying their pistol.

KCI USA 10/33 Glock 9mm magazine front view showing extended body and baseplate KCI USA 10/33 Glock 9mm magazine side profile showing reinforced feed lips and polymer body

Specifications

BrandKCI USA
Caliber9mm Luger
Capacity10 Rounds (CA Compliant)
Body Style33-Round Extended Body
Compatible ModelsGlock 17, 19, 26, 34
Feed LipsReinforced Steel
Body MaterialHigh-Strength Polymer
FinishMatte Black
GenerationGen 2
State ComplianceCalifornia Legal (10-Round Block)

Frequently Asked Questions

Will this magazine work with my Glock 19 or Glock 26?

Yes. This KCI USA magazine is designed to be compatible with all standard Glock 9mm pistols, including the G17, G19, G26, and G34. The extended 33-round body will protrude below the grip on compact models like the G19 and G26, which is intentional — it provides a full-hand grip surface that many shooters find more comfortable and controllable during range sessions.

Is this magazine permanently blocked to 10 rounds, and can it be converted?

This magazine is sold as a California-compliant 10-round blocked magazine and is intended for use in states with magazine capacity restrictions. It is the buyer's sole responsibility to ensure compliance with all applicable local, state, and federal laws regarding magazine capacity. Goodland Guns sells this product in its compliant configuration only.

How does the KCI USA magazine compare to OEM Glock magazines in terms of reliability?

KCI USA is a well-regarded South Korean manufacturer known for producing aftermarket magazines that meet tight tolerances. This Gen 2 magazine features reinforced steel feed lips and has undergone extensive drop, feed, and function testing to ensure reliable performance. While no aftermarket magazine is guaranteed to perform identically to an OEM Glock mag in every firearm, the vast majority of users report smooth feeding and consistent cycling across a wide range of 9mm ammunition types.

Color:
Black
Capacity:
10/33 Round
Caliber:
9mm
Platform:
Glock
Follower Color:
Black

Reviews

  • 5
    Perfect

    Posted by Ian Salvisberg on Mar 16th 2026

    Super perfect, fast shipping and has all of the cool factor of a high cap mag while being compliant! I love magazine bans!

  • 5
    Magazines

    Posted by Nicholas Doura on Jan 20th 2026

    Great quality

  • 5
    The best magazine ever

    Posted by Isaac Magana on Jan 13th 2026

    I love this magazine

  • 5
    Great purchase!

    Posted by Jay Randolph on Oct 15th 2025

    Everything was great and fits great and works perfect!