What is the Shield Arms CZ P10C / P07 +5/4 Magazine Extension?
The Shield Arms CZ P10C / P07 +5/4 Magazine Extension is a precision-machined aluminum baseplate that increases your magazine capacity by 5 rounds for 9mm or 4 rounds for .40 S&W. Designed specifically for CZ P10C Compact and P07 Duty pistols, this extension maintains factory reliability while giving you enhanced firepower for competition, duty, or personal defense.
Key Components:
- CNC-machined aircraft-grade aluminum extension body
- Hard anodized corrosion-resistant finish
- Includes installation hardware and allen wrenches
- Compatible with CZ OEM magazines
Enhanced Capacity for Your CZ Pistol
When you need maximum capacity without compromising reliability, the Shield Arms CZ P10C / P07 Magazine Extension delivers. Engineered specifically for CZ's popular P10C Compact and P07 Duty models, this extension transforms your standard capacity magazines into higher-capacity powerhouses. Add 5 additional rounds to your 9mm magazines or 4 rounds to your .40 S&W magazines—critical extra capacity for competitive shooting, duty use, or extended range sessions.
Constructed from aircraft-grade aluminum alloy and finished with a durable hard anodized coating, this extension is built to withstand the demanding conditions of professional use. The precision CNC-machining process ensures perfect fitment with CZ OEM magazines and maintains the smooth, reliable feeding your CZ pistol is known for. Unlike cheaper polymer extensions that can crack or deform, our aluminum construction provides superior durability while maintaining a lightweight profile that won't throw off your pistol's balance.
Installation is straightforward and requires no permanent modifications to your magazines or firearm. Each extension includes the necessary allen wrenches and hardware for quick assembly. Whether you're running multiple stages at a USPSA match, conducting training drills, or carrying on duty, this extension gives you the confidence of additional rounds when you need them most. Trusted by competitive shooters and tactical professionals nationwide, the Shield Arms CZ magazine extension represents the perfect balance of increased capacity and proven reliability.
Key Features
- CZ-Specific Engineering: Designed exclusively for CZ P10C Compact and P07 Duty pistols with precise dimensional tolerances
- Significant Capacity Increase: Adds 5 rounds for 9mm magazines or 4 rounds for .40 S&W magazines
- Aircraft-Grade Aluminum Construction: CNC-machined from high-strength aluminum alloy for maximum durability
- Hard Anodized Finish: Corrosion-resistant coating protects against wear and environmental exposure
- Drop-In Installation: No gunsmithing required—installs quickly with included hardware
- Maintains Factory Reliability: Engineered to preserve smooth feeding and consistent magazine function
- Lightweight Design: Adds minimal weight while maintaining optimal pistol balance
- Professional Quality: Rigorous testing ensures performance under demanding conditions
Important Compatibility Notes
Compatible Models: This extension is engineered specifically for CZ P10C Compact and CZ P07 Duty pistols. It works with CZ OEM factory magazines for these models.
Related Extensions: Looking for extensions for other CZ models? Check out our CZ P10F / P09 +5 Magazine Extension or CZ P10S +5 Magazine Extension for full-size and subcompact models.
Pre-Installed Option: Want to skip the installation? Consider our CZ P10C +5 Pre-Installed 9mm Magazine Extension for a ready-to-use solution.
Made in USA with Lifetime Protection
Every Shield Arms CZ magazine extension is proudly manufactured in the United States using American materials and craftsmanship. We stand behind our products with a 100% lifetime warranty that covers manufacturing defects and material failures. Additionally, all our magazine extensions are covered by our exclusive "Spring for Life" guarantee—if your magazine spring ever wears out or loses tension, we'll replace it free of charge for life.
Technical Specifications
| Specification |
Details |
| Compatible Models |
CZ P10C Compact, CZ P07 Duty |
| Magazine Compatibility |
CZ OEM factory magazines |
| Capacity Increase (9mm) |
+5 rounds |
| Capacity Increase (.40 S&W) |
+4 rounds |
| Material |
Aircraft-grade aluminum alloy |
| Finish |
Hard anodized |
| Installation |
Drop-in, no permanent modifications |
| Hardware Included |
Yes, allen wrenches and installation hardware |
| Weight |
Lightweight (adds minimal weight to magazine) |
| Manufacturing |
CNC-machined in USA |
| Warranty |
Lifetime warranty and Spring for Life guarantee |
Capacity Comparison
| Configuration |
9mm Capacity |
.40 S&W Capacity |
| CZ P10C Stock Magazine |
15 rounds |
12 rounds |
| With Shield Arms Extension |
20 rounds |
16 rounds |
| CZ P07 Stock Magazine |
15 rounds |
12 rounds |
| With Shield Arms Extension |
20 rounds |
16 rounds |
Frequently Asked Questions
Will this extension work with both my CZ P10C and P07?
Yes, this extension is designed to work with both CZ P10C Compact and CZ P07 Duty pistols. Both models use compatible magazine bodies, so one extension works for both firearms.
How many rounds does this add to my magazine?
The extension adds 5 additional rounds to 9mm magazines (bringing standard 15-round magazines to 20 rounds total) or 4 additional rounds to .40 S&W magazines (bringing 12-round magazines to 16 rounds total).
Does this require any permanent modifications to my magazines?
No, this is a drop-in installation that requires no permanent modifications. You can easily remove the extension and return your magazine to factory configuration if desired.
Will this extension affect magazine reliability?
No, the Shield Arms extension is precision-engineered to maintain factory magazine reliability. The extension uses CZ OEM springs and followers to ensure consistent feeding and operation. Thousands of competitive shooters trust these extensions for match use where reliability is critical.
Is installation difficult? What tools do I need?
Installation is straightforward and takes just a few minutes. All necessary hardware and allen wrenches are included with your extension. For detailed step-by-step instructions, visit our installation guides page.
Can I use this extension for concealed carry?
While you can use this extension for concealed carry, the added length may make concealment more challenging depending on your carry method and body type. Many users prefer standard capacity magazines for carry and save extended magazines for competition or range use.
Are these extensions legal in all states?
Magazine capacity laws vary by state and locality. Some jurisdictions restrict magazine capacity to 10 rounds or less. It is your responsibility to ensure compliance with all applicable federal, state, and local laws. Shield Arms is not responsible for ensuring compliance with your local regulations.
What's the difference between aluminum and polymer extensions?
Aluminum extensions offer superior durability and impact resistance compared to polymer alternatives. They're less likely to crack from drops or sustained use, and they maintain tighter dimensional tolerances over time. While slightly heavier than polymer, aluminum extensions provide professional-grade durability for serious users.
Will this work with aftermarket magazines?
This extension is designed specifically for CZ OEM factory magazines. While it may work with some aftermarket magazines, we cannot guarantee fitment or function with non-OEM products. For best results, use with CZ factory magazines.
What's covered under the warranty?
Shield Arms provides a 100% lifetime warranty covering manufacturing defects and material failures. Additionally, our "Spring for Life" guarantee means we'll replace your magazine spring free of charge if it ever wears out or loses tension.
Can I get this extension pre-installed on a magazine?
Yes! We offer the CZ P10C +5 Pre-Installed 9mm Magazine Extension, which includes a complete magazine with the extension already installed and tested—ready to use right out of the package.
Who Should Buy This Extension
- Competitive Shooters: USPSA, IDPA, and 3-Gun competitors who need maximum capacity for stage runs
- Range Enthusiasts: Shooters who want fewer reloads during training sessions and extended range time
- Law Enforcement Officers: Duty officers seeking enhanced capacity for their CZ P10C or P07 service pistols
- Home Defense Users: Responsible gun owners who want additional rounds available for home protection scenarios
- CZ Platform Owners: Anyone who owns a CZ P10C or P07 and wants to maximize their pistol's potential
- Firearms Instructors: Training professionals who want extended capacity during long teaching sessions
- Tactical Operators: Security professionals and tactical team members who need reliable extended capacity
Installation & Setup
Installing your Shield Arms magazine extension is a straightforward process that takes just minutes. Each extension includes all necessary hardware and allen wrenches for assembly. Simply disassemble your existing magazine baseplate, install the extension with the provided hardware, and reassemble. The extension maintains the same magazine spring and follower geometry as factory configuration for reliable operation. For detailed visual instructions and helpful tips, check out our comprehensive guides at the Shield Arms Installation Center.
Related Products & Accessories
Upgrade Your CZ Capacity Today
Don't settle for standard capacity when you can have 20 rounds of 9mm or 16 rounds of .40 S&W at the ready. The Shield Arms CZ P10C / P07 Magazine Extension combines American manufacturing quality with precision engineering to deliver the enhanced capacity you need without sacrificing the reliability you demand. Backed by our lifetime warranty and Spring for Life guarantee, this extension represents a smart investment in your CZ pistol's performance. Order yours today and experience the confidence of extended capacity.
