Shield Arms CZ P10S +5/4 Magazine Extension - Black

The Shield Arms CZ P10S +5/4 magazine extension gives your P10S a meaningful capacity boost without forcing you to carry an entirely different gun. This aluminum extension adds 5 rounds to your standard CZ P10S magazine, turning a compact carry gun into something with more staying power on the range or in extended shooting sessions. Built from billet 6061 aluminum and finished with Type 2 anodizing, it's a purpose-built upgrade made right here in the USA.

What sets this extension apart is the thoughtful engineering behind everyday use. The floor plate design lets you access the spring and follower without detaching the extension itself—no wrestling with your mag, no frustration during cleaning or maintenance. Index cuts along the body give you a better grip when drawing from a mag pouch, and it plays nice with most aftermarket flared magwells if you run one. The extension ships with a +10% power spring, so feeding is reliable straight out of the box.

Compatibility matters with CZ upgrades: this extension fits OEM CZ P10S magazines with orange followers only. If you're running a P10S and want to add capacity without switching platforms, this is a solid, made-in-the-USA solution backed by a lifetime warranty.

Key Features

• Adds 5 rounds to standard CZ P10S magazines
• Easy-access floor plate for spring and follower service without full disassembly
• Index cuts for improved grip during magazine pouch drawstrokes
• Machined 6061 aluminum with Type 2 anodize finish
• Compatible with most aftermarket flared magwells
• Includes +10% power spring for reliable feeding
• Made in the USA
• Lifetime warranty coverage

Specifications

Frequently Asked Questions

Will this extension fit my CZ P10S magazine?

Yes, but only if your magazine has an orange follower. This extension is designed for OEM CZ P10S magazines with orange followers. Check your magazine's follower color before ordering.

Can I service the magazine without removing the extension?

Yes. The easy-access floor plate design allows you to reach the spring and follower for cleaning or maintenance without detaching the extension from the magazine body.

What does the +10% power spring do?

The included spring is rated 10% stronger than standard, which helps ensure reliable feeding and proper feeding behavior with the extended magazine.

Will this work with my aftermarket magwell?

It's compatible with most aftermarket flared magwells, but magwell compatibility can vary by design. If you have a specific magwell in mind, verify compatibility before purchase.