What is the Shield Arms CZ P10S +5 Magazine Extension?
The Shield Arms CZ P10S +5 Magazine Extension is a precision-machined aluminum baseplate that transforms your subcompact CZ P10S into a 15-round powerhouse. Adding 5 additional rounds to the standard 10-round magazine, this extension gives you compact-size capacity in a subcompact package—ideal for concealed carry, backup duty use, or anyone who wants maximum capacity from their P10S pistol.
Key Features:
- Increases capacity from 10 to 15 rounds total
- Aircraft-grade aluminum construction with hard anodized finish
- Drop-in installation with included hardware
- Compatible with CZ P10S OEM magazines
- Covered by Spring for Life guarantee
Full-Size Capacity in a Subcompact Package
The CZ P10S is renowned as one of the most concealable 9mm pistols on the market, but its 10-round capacity has always been a compromise for serious carriers. The Shield Arms CZ P10S +5 Magazine Extension solves this capacity challenge by adding 5 crucial rounds to your P10S magazines, bringing total capacity to 15 rounds—matching many compact pistols while maintaining the P10S's superior concealability. Whether you're carrying concealed daily, need a high-capacity backup gun, or simply want to maximize your P10S's potential at the range, this extension delivers compact-class capacity without requiring you to carry a larger pistol.
Engineered specifically for the unique dimensions of the CZ P10S subcompact frame, this extension uses precision CNC-machined aircraft-grade aluminum construction to provide professional-grade durability in a package light enough for all-day carry. The hard anodized finish resists corrosion and wear, ensuring your extension looks and performs like new through thousands of rounds and countless draws from concealment. Unlike polymer extensions that can flex or crack under the stress of subcompact magazine springs, aluminum construction maintains dimensional stability and reliability under all conditions. The extension adds approximately one inch to your magazine length—enough to house 5 additional rounds while still keeping your overall package smaller than most compact pistols.
Installation is simple and reversible, requiring no permanent modifications to your magazines or pistol. Each extension includes all necessary hardware and allen wrenches for quick assembly. The design maintains the same spring and follower geometry as factory configuration, preserving the smooth, reliable feeding CZ pistols are known for. For concealed carriers who refuse to compromise on capacity, competitive shooters running subcompact divisions, or law enforcement officers carrying the P10S as a backup gun, this extension represents the best of both worlds—subcompact concealability with serious firepower. Join thousands of P10S owners who've discovered that you don't have to sacrifice capacity for concealability.
Key Features
- Subcompact-Specific Design: Engineered exclusively for CZ P10S dimensions with precision tolerances for perfect fitment
- Dramatic Capacity Increase: Adds 5 rounds to standard 10-round magazines for 15 rounds total—50% more capacity
- Aircraft-Grade Aluminum: CNC-machined from high-strength aluminum alloy for maximum durability in a lightweight package
- Hard Anodized Finish: Corrosion-resistant coating withstands daily carry conditions and environmental exposure
- Concealed Carry Optimized: Adds minimal length while delivering compact-class capacity in a subcompact frame
- Drop-In Installation: No gunsmithing or permanent modifications required—installs in minutes with included tools
- Factory Reliability Maintained: Preserves CZ's legendary feeding reliability and consistent magazine function
- Lightweight Profile: Minimal weight addition maintains optimal balance for subcompact carry and handling
Important Compatibility Information
Compatible Model: This extension is designed specifically and exclusively for the CZ P10S subcompact pistol. It works with CZ P10S OEM factory magazines.
Not Compatible With: This extension will NOT work with P10C, P07, P10F, or P09 models. Each CZ P10-series model requires its own specific extension. For other models, see our CZ P10C / P07 Magazine Extension or CZ P10F / P09 Magazine Extension.
Pre-Installed Option: Want a ready-to-use solution? Check out our CZ P10S +5 Pre-Installed 9mm Magazine Extension for a complete magazine with the extension already installed, tested, and ready for immediate use.
American Craftsmanship with Lifetime Protection
Every Shield Arms CZ P10S magazine extension is proudly manufactured in the United States using American materials and precision CNC machining technology. We back our products with an industry-leading 100% lifetime warranty covering all manufacturing defects and material failures for the entire life of the product. Our magazine extensions also include our exclusive "Spring for Life" guarantee—if your magazine spring ever wears out, loses tension, or fails to perform, we'll replace it completely free of charge for as long as you own the extension. This is our commitment to ensuring your CZ P10S performs flawlessly when it matters most.
Technical Specifications
| Specification |
Details |
| Compatible Models |
CZ P10S (Subcompact) only |
| Magazine Compatibility |
CZ P10S OEM factory magazines |
| Caliber |
9mm only |
| Capacity Increase |
+5 rounds |
| Total Capacity |
15 rounds (10+5) |
| Material |
Aircraft-grade 6061-T6 aluminum alloy |
| Finish |
Type II anodized |
| Manufacturing Method |
CNC-machined to precision tolerances |
| Installation |
Drop-in, reversible, no permanent modifications |
| Hardware Included |
Yes, complete installation hardware and allen wrenches |
| Length Added |
Approximately 1 inch |
| Weight |
Lightweight (minimal impact on carry weight) |
| Country of Origin |
Made in USA |
| Warranty |
Lifetime warranty plus Spring for Life guarantee |
Subcompact Capacity Transformation
| Configuration |
Capacity |
Size Class |
Advantage |
| CZ P10S Stock |
10 rounds |
Subcompact |
Maximum concealability |
| With Shield Arms Extension |
15 rounds |
Subcompact frame |
Compact capacity + subcompact size |
| CZ P10C (Compact) |
15 rounds |
Compact |
Larger frame required |
Frequently Asked Questions
How much capacity does this add to my P10S?
The Shield Arms extension adds 5 rounds to your CZ P10S magazine, increasing capacity from the standard 10 rounds to 15 rounds total. This gives you the same capacity as many compact pistols while maintaining your P10S's superior concealability.
Will this work with my P10C or P07 magazines?
No, this extension is designed specifically for the CZ P10S subcompact model only. The P10S has unique magazine dimensions that require a dedicated extension. For P10C or P07 pistols, you need our CZ P10C / P07 Magazine Extension.
How much does this add to the overall length of my pistol?
The extension adds approximately one inch to the bottom of your magazine. This extra length is necessary to house the 5 additional rounds while maintaining proper spring tension and reliable feeding. Your P10S will still be significantly more compact than most compact-size pistols.
Is this suitable for everyday concealed carry?
Absolutely. Many concealed carriers use this extension as their primary carry configuration, especially those who carry appendix or strong-side IWB. The extension adds minimal length while delivering 50% more capacity—a worthwhile trade-off for most serious carriers. You maintain subcompact concealability while gaining compact-class firepower.
Does the extension affect reliability or feeding?
No, the Shield Arms extension is engineered to maintain factory-level reliability. The design preserves the same spring and follower geometry as the original magazine configuration, ensuring consistent feeding and function. Thousands of P10S owners trust this extension for daily carry where reliability is non-negotiable.
How difficult is installation?
Installation is straightforward and takes just a few minutes. All necessary hardware and allen wrenches are included. Simply disassemble your magazine baseplate, install the extension with the provided hardware, and reassemble. No special tools or gunsmithing skills required. For visual instructions, visit our installation guides page.
Can I remove the extension if I want to go back to stock configuration?
Yes, installation requires no permanent modifications. You can easily remove the extension and return your magazine to factory configuration at any time. This makes it perfect for users who want flexibility—extended capacity for some situations and maximum concealability for others.
Are there magazine capacity restrictions I should know about?
Magazine capacity laws vary by jurisdiction. Some states and localities restrict magazines to 10 rounds or less, while others have different limits. It is your sole responsibility to ensure compliance with all applicable federal, state, and local laws. Shield Arms cannot provide legal advice specific to your location.
Why choose aluminum over polymer for a carry extension?
For concealed carry, durability is critical. Aluminum provides superior impact resistance compared to polymer—important when your magazine might be subjected to drops, impacts against hard surfaces, or sustained pressure during daily carry. Aluminum also maintains tighter dimensional tolerances over time, ensuring consistent reliability.
What's the difference between this and just carrying a P10C?
With the Shield Arms extension, your P10S maintains its shorter grip length and overall lighter weight compared to the P10C, making it easier to conceal and more comfortable for extended carry. The extension only adds length to the magazine, not the grip, so your pistol remains more concealable while achieving similar capacity.
Can I buy complete magazines with the extension already installed?
Yes! Our CZ P10S +5 Pre-Installed 9mm Magazine Extension includes a complete magazine with the extension already installed, tested, and ready to use—perfect for building your carry magazine inventory or if you prefer a ready-to-go solution.
Who Should Buy This Extension
- Concealed Carriers: Daily carriers who want maximum capacity without moving up to a larger, less concealable pistol
- Appendix Carry Users: AIWB carriers who can easily accommodate the extra magazine length for significantly more capacity
- Backup Gun Carriers: Law enforcement and security professionals carrying the P10S as a backup who want enhanced capacity
- Subcompact Division Competitors: Competitive shooters in divisions that allow subcompact pistols who want maximum legal capacity
- Urban Carriers: City dwellers who need deep concealment but want serious defensive capacity
- P10S Owners: Anyone who owns a CZ P10S and wants to maximize its defensive potential without switching to a larger gun
- Minimalist Carriers: Shooters who prefer the smallest practical pistol but refuse to compromise on capacity
- Multi-Threat Preparedness: Responsible citizens who want adequate capacity for multiple-attacker scenarios
- Range Enthusiasts: P10S owners who want fewer reloads during training and practice sessions
- Small-Handed Shooters: Those with smaller hands who prefer subcompact grips but want more rounds available
Installation & Setup
Installing your Shield Arms CZ P10S magazine extension is quick and straightforward. Each extension includes all necessary installation hardware and the correct allen wrenches for assembly. Simply remove your existing magazine baseplate, position the extension body, secure it with the included hardware, and reassemble—the entire process takes just minutes. The extension maintains the same internal magazine geometry as factory configuration, preserving reliable spring tension and follower operation throughout the extended capacity. For detailed step-by-step instructions, troubleshooting tips, and installation videos, visit the Shield Arms Installation Center where you'll find comprehensive guides for all our magazine extensions.
Related Products & Accessories
Don't Compromise—Conceal More Firepower
The CZ P10S is the ultimate subcompact carry pistol, and the Shield Arms +5 Magazine Extension makes it even better. Transform your 10-round subcompact into a 15-round powerhouse without sacrificing the concealability that made you choose the P10S in the first place. Precision-machined in the USA from aircraft-grade aluminum and backed by our lifetime warranty plus Spring for Life guarantee, this extension delivers compact-class capacity in a subcompact package. Whether you're carrying concealed daily, competing in subcompact divisions, or need a high-capacity backup gun, upgrade your P10S today and carry with confidence knowing you have serious firepower in the most concealable package possible.
