What is the S15 Combo Pack 2?
The S15 Combo Pack 2 is a comprehensive magazine solution designed for competitive shooters and serious enthusiasts who demand maximum performance from their Glock 43X or 48. This package includes three S15 Gen 3 magazines (15 rounds each) and one anodized aluminum +5 extension, creating a 20-round extended capacity magazine alongside two standard 15-round magazines.
Essential Compatibility Note: S15 magazines require a steel magazine catch for optimal performance:
Enhance your setup with:
Competition-Ready Magazine Package for Serious Shooters
The S15 Combo Pack 2 represents the pinnacle of magazine technology for Glock 43X and 48 owners who refuse to compromise on capacity or performance. Unlike standard combo packs, this configuration is specifically engineered for competitive shooting disciplines including USPSA Carry Optics, IDPA, and IPSC competition, where maximum ammunition capacity and minimal reload frequency provide decisive advantages.
At the heart of this package are three S15 Gen 3 magazines, featuring Shield Arms' latest generation technology with enhanced follower geometry, refined spring dynamics, and improved manufacturing tolerances. The included anodized aluminum +5 extension transforms one magazine into a 20-round powerhouse, delivering unmatched capacity in the slim-frame Glock platform. This dual-capacity approach provides versatility: maintain standard 15-round magazines for concealed carry or everyday use, while deploying the extended 20-round configuration for competition stages, high-volume training sessions, or tactical applications where maximum ammunition availability is paramount.
Constructed from heat-treated steel with precision manufacturing processes, these magazines deliver reliability that has made the S15 platform the choice of competitive shooters and firearms professionals worldwide. The included magazine extension features CNC-machined aluminum construction with a durable hard anodized finish, ensuring corrosion resistance and longevity even under demanding competition schedules. Every component is manufactured in the USA and backed by Shield Arms' 100% lifetime warranty and "Spring for Life" guarantee.
Key Features
- 20-Round Extended Capacity: One magazine with +5 extension provides maximum ammunition capacity in a slim-frame platform
- Versatile Configuration: Two standard 15-round magazines plus one extended 20-round magazine for mission-specific deployment
- Gen 3 Technology: Latest generation S15 magazines with proven reliability improvements and enhanced feeding characteristics
- Premium Anodized Extension: Anodized aluminum construction provides superior corrosion resistance and durability
- Competition Optimized: Engineered specifically for USPSA, IPSC, IDPA, and competitive shooting applications
- Heat-Treated Steel Construction: Magazine bodies manufactured from premium steel for maximum strength and longevity
- Complete Installation Hardware: All components necessary for magazine extension installation included
- USA Manufacturing: Precision manufactured in the United States with rigorous quality control standards
Important Compatibility Requirements
Steel Magazine Catch Required: S15 magazines require installation of a steel magazine catch for optimal function and reliability. The OEM Glock polymer magazine catch is not compatible with S15 magazines and must be replaced.
Choose from our steel magazine catch options:
Warranty and Quality Assurance
Every S15 Combo Pack 2 is manufactured in the USA and backed by Shield Arms' comprehensive quality guarantees. All magazines are covered by our 100% lifetime warranty, ensuring long-term reliability and customer satisfaction. Additionally, magazine springs are protected by our exclusive "Spring for Life" guarantee, providing free spring replacements for the life of your magazines. This commitment to quality and customer support has made Shield Arms the preferred choice among competitive shooters, law enforcement professionals, and firearms enthusiasts who demand uncompromising performance.
Ideal Applications and Use Cases
The S15 Combo Pack 2 excels in demanding shooting disciplines and applications:
- USPSA Carry Optics Competition: Extended capacity reduces stage reload requirements while maintaining division compliance
- IPSC and IDPA Competition: Maximum ammunition capacity provides competitive advantages in diverse shooting scenarios
- High-Volume Training: Extended magazine configuration reduces reload frequency during intensive practice sessions
- Tactical Training Courses: Versatile capacity options support various training objectives and scenarios
- Competitive Shooting Sports: Proven reliability and capacity advantages trusted by championship-level competitors
- Range Practice: Extended capacity maximizes trigger time and skill development efficiency
- Everyday Carry: Standard 15-round magazines provide enhanced capacity for concealed carry applications
Technical Specifications
| Specification |
Details |
| Package Contents |
3× S15 Gen 3 Magazines (15 rounds each), 1× +5 Magazine Extension with hardware |
| Standard Magazine Capacity |
15 rounds (9mm) |
| Extended Magazine Capacity |
20 rounds (with +5 extension installed) |
| Compatible Models |
Glock 43X (9mm), Glock 48 (9mm) - All generations |
| Magazine Material |
Heat-treated steel construction |
| Extension Material |
CNC-machined aluminum alloy |
| Extension Finish |
Anodized coating (corrosion resistant) |
| Magazine Generation |
S15 Gen 3 (latest technology) |
| Finish Options |
QPQ Nitrocarburizing, Silver Nickel, Black Nickel |
| Manufacturing |
Made in USA |
| Warranty |
Lifetime warranty + Spring for Life guarantee |
| Required Accessory |
Steel magazine catch (sold separately) |
Capacity Comparison: S15 vs. OEM Glock Magazines
| Feature |
S15 Combo Pack 2 |
OEM Glock Magazines |
| Standard Capacity |
15 rounds per magazine |
10 rounds per magazine |
| Extended Capacity |
20 rounds (with +5 extension) |
Not available for 43X/48 |
| Capacity Advantage |
+50% standard / +100% extended |
Baseline |
| Magazine Body |
Heat-treated steel |
Polymer |
| Generation |
Gen 3 (latest technology) |
Original specification |
| Extension Option |
Included anodized +5 extension |
Not compatible |
| Manufacturing |
Made in USA |
Made in Austria |
| Warranty |
Lifetime + Spring for Life |
Limited manufacturer warranty |
Magazine Extension Features
The included +5 magazine extension represents precision engineering designed specifically for competitive shooting applications:
- +5 Round Capacity Increase: Extends total magazine capacity from 15 to 20 rounds
- CNC-Machined Construction: Precision-manufactured aluminum alloy for exact tolerances and consistent performance
- Anodized Finish: Anodizing provides corrosion resistance and increased durability
- Optimized Feeding Geometry: Internal design ensures reliable ammunition feeding throughout extended capacity
- Simple Installation Process: Straightforward magazine disassembly and reassembly with included hardware
- Competition Proven: Extensively tested in demanding competitive shooting environments
- Lightweight Design: Aluminum construction minimizes weight increase while maximizing strength
Frequently Asked Questions
Are S15 magazines compatible with OEM Glock magazine catches?
While they may function for a period of time, S15 magazines require installation of a steel magazine catch for proper long-term function. The OEM Glock polymer magazine catch will wear out with S15 magazines and must be replaced with either our Premium S-Series Steel Mag Catch or Standard S-Series Steel Mag Catch. This upgrade is essential for reliable magazine retention and function.
How difficult is the magazine extension installation?
Magazine extension installation is straightforward and can be completed with included tools. The process involves disassembling the magazine, installing the extension components with included hardware, and reassembling. Detailed installation instructions are provided with the combo pack. For visual guidance, visit our installation guides page.
Can I use the +5 extension on all three magazines?
The S15 Combo Pack 2 includes one +5 extension designed for use with one magazine. Additional extensions can be purchased separately if you wish to extend multiple magazines. However, many shooters prefer the versatile configuration of standard and extended capacity magazines included in this package.
Are S15 magazines legal in restricted states?
Magazine capacity restrictions vary by state and local jurisdiction. S15 magazines with 15-round capacity may be restricted in states with magazine capacity limits. The 20-round extended configuration may face additional restrictions. Purchasers are responsible for ensuring compliance with all applicable federal, state, and local laws. Shield Arms does not ship magazines to addresses in restricted jurisdictions.
Will the magazine extension affect concealed carry?
Yes, the +5 extension increases overall magazine length, which may affect concealment depending on your carry method and holster. This configuration is optimized for competition, training, and open carry applications. The two standard 15-round magazines included in the combo pack are better suited for concealed carry while still providing superior capacity compared to OEM 10-round magazines.
How does the warranty work for this combo pack?
All components in the S15 Combo Pack 2 are covered by Shield Arms' 100% lifetime warranty against defects in materials and workmanship. Additionally, magazine springs are covered by our exclusive "Spring for Life" guarantee, providing free replacement springs for the life of your magazines. This comprehensive coverage ensures your investment is protected.
Do I need to modify my Glock to use these magazines?
The only required modification is replacing the OEM polymer magazine catch with a steel magazine catch, which is a simple user-installable upgrade. No permanent modifications to the firearm frame are necessary. The steel magazine catch installation takes only a few minutes with basic tools and detailed instructions are provided.
Can I mix S15 magazines with OEM Glock magazines?
Once you install a steel magazine catch for S15 compatibility, your Glock will still accept OEM magazines. However, the steel catch provides optimal performance specifically engineered for S15 magazines. Many shooters maintain both S15 and OEM magazines for different applications, though most find S15 magazines superior for all uses after experiencing the increased capacity.
What's included for the magazine extension installation?
The combo pack includes all necessary hardware for installing the +5 extension: the anodized aluminum extension body, replacement magazine spring optimized for extended capacity, base plate hardware, and detailed installation instructions. No additional parts are required for installation.
How should I maintain my S15 magazines?
S15 magazines require minimal maintenance. Periodically inspect magazines for debris or damage, clean with appropriate solvents if exposed to corrosive materials or excessive fouling, ensure follower moves freely within the magazine body, and verify spring tension remains consistent. Avoid disassembling magazines unnecessarily. Our "Spring for Life" guarantee covers spring replacement if wear occurs.
Who Should Buy the S15 Combo Pack 2
- Competitive Shooters: USPSA, IPSC, IDPA, and other competitive disciplines where capacity advantages and reduced reload frequency provide measurable performance benefits
- Serious Training Enthusiasts: Shooters who dedicate significant range time to skill development and benefit from extended capacity during high-volume practice sessions
- Firearms Instructors: Professionals conducting training courses who require reliable, high-capacity magazines for demonstrations and extended shooting exercises
- Glock 43X/48 Owners: Anyone seeking to maximize the potential of their slim-frame Glock platform without compromising concealability or handling characteristics
- Tactical Professionals: Law enforcement and security professionals requiring enhanced ammunition capacity for duty or off-duty carry
- Preparedness-Minded Individuals: Those who prioritize maximum defensive capability and ammunition availability in their carry setup
- Competition New Shooters: Individuals entering competitive shooting disciplines who need a comprehensive magazine package optimized for match performance
Installation and Setup Resources
Installing your S15 magazines and magazine extension is straightforward with proper guidance. The steel magazine catch installation requires basic disassembly of your Glock slide to access the magazine catch mechanism—a process that takes only minutes with the right instructions. The magazine extension installation involves disassembling one magazine, installing the extension components with included hardware, and reassembling with the extended spring.
For comprehensive visual guides and detailed instructions, visit our installation guides page, where you'll find step-by-step documentation for both magazine catch installation and magazine extension assembly. We recommend thoroughly function testing all magazines with your specific ammunition before relying on them for competition or defensive applications.
Complementary Products and Accessories
Maximize your S15 Combo Pack 2 performance with these essential and complementary Shield Arms products:
Building a complete magazine ecosystem ensures you're prepared for any shooting discipline or application. Many competitive shooters maintain a mix of standard and extended capacity magazines for different stages and scenarios, while training enthusiasts benefit from having multiple magazines to minimize reload interruptions during practice sessions.
Competition Performance Advantages
The S15 Combo Pack 2 delivers measurable advantages in competitive shooting environments. The 20-round extended capacity magazine reduces reload frequency during USPSA and IPSC stages, allowing shooters to maintain momentum and minimize time lost to magazine changes. The included standard 15-round magazines provide excellent capacity for stages where full extended capacity isn't required, maintaining versatility across diverse course designs.
Competitive shooters consistently report that S15 magazines provide reliability comparable to or exceeding OEM magazines while delivering the capacity advantages that translate directly to improved stage times and reduced penalty risk. The Gen 3 improvements ensure consistent feeding across the ammunition types commonly used in competition, from light-recoiling competition loads to full-power defensive ammunition used in certain divisions.
Why Choose the S15 Combo Pack 2
The S15 Combo Pack 2 represents exceptional value for Glock 43X and 48 owners who demand maximum performance. This carefully curated package provides everything needed for competitive shooting success: multiple high-capacity magazines for versatility, an extended capacity option for maximum ammunition availability, proven Gen 3 technology for enhanced reliability, and premium construction with comprehensive warranty coverage.
Unlike purchasing components individually, the combo pack delivers complete compatibility and optimized performance at competitive pricing. Every component is manufactured to exacting standards in the USA, backed by Shield Arms' commitment to quality and customer satisfaction. Whether you're entering your first USPSA match or competing at the national level, the S15 Combo Pack 2 provides the magazine foundation for championship-level performance.
Dominate the competition with the S15 Combo Pack 2—maximum capacity, proven reliability, and championship performance engineered specifically for your slim-frame Glock.
