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Glock 20 Magazine Extension
Glock 20 Magazine Extension – Add +18 Rounds of 10mm Firepower
🔧 Boost Your Capacity for Defense, Range, or Competition
When you’re shooting 10mm, every extra round counts. Whether you're running drills or preparing for a high-stakes competition, a Glock 20 magazine extension gives your pistol the firepower it deserves. These mag extensions provide up to +18 rounds, transforming your G20 into a high-capacity performer—without compromising reliability.
Mounts Plus carries KRISS MagEx2 extension kits specifically designed for Glock 20 mags. These easy-to-install upgrades use OEM Glock components and precision-engineered baseplates to expand your total capacity to a stunning 30 rounds.
💡 Why Choose a Magazine Extension for Your Glock 20?
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✅ Add up to +18 rounds of 10mm capacity
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✅ Use factory Glock magazines and followers
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✅ Perfect for competition, range days, or extended carry
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✅ Available in multiple colors: black, FDE, and more
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✅ Compatible with Gen 3, Gen 4, and Gen 5 Glock 20 pistols
Built tough and engineered for serious shooters, these extensions handle the power of 10mm without flinching.
🔍 Featured Product: KRISS MagEx2 Kit for Glock 20
| Feature | Detail |
|---|---|
| Compatibility | Glock 20, 10mm, Gen 3–5 |
| Capacity Increase | +18 rounds (30 total with OEM 12-round mag) |
| Materials | High-impact polymer housing, aluminum baseplate |
| Colors Available | Black, Flat Dark Earth (FDE), OD Green |
| Installation | No gunsmithing needed – uses factory spring |
These kits include everything you need to transform your factory mag into a 30-round powerhouse. Just disassemble your existing mag, slide on the MagEx2 components, and you’re good to go.
🛠️ Installation Overview
- Unload and disassemble your Glock 20 magazine
- Remove the stock follower and baseplate
- Attach the MagEx2 extension housing and floorplate
- Secure the extension with included hardware
- Test spring tension and feeding function
No tools, no headaches—just expanded capacity in under 5 minutes.
🔧 Compatibility
These Glock 20 mag extensions work with:
- Factory Glock 10mm magazines (15 or 10 rounds)
- Gen 3, Gen 4, and Gen 5 Glock 20 pistols
- Also compatible with Glock 40 MOS (long slide)
❓ Glock 20 Magazine Extension FAQs
Q: Will this work on my Glock 20 Gen 5?
Yes. The KRISS MagEx2 kit is fully compatible with Glock 20 Gen 3–5 magazines.
Q: Does this add exactly 18 rounds?
It adds 17–18 rounds depending on follower and spring configuration. Standard setup yields 30-round total capacity with OEM mags.
Q: Do I need a new spring?
No. These kits use your OEM magazine spring, which works efficiently inside the MagEx2 sleeve.
Q: Are these legal in all states?
Not always. Many states restrict magazine capacity. Be sure to check local laws before ordering.
🛒 Shop Glock 20 Magazine Extensions at Mounts Plus
Don’t settle for limited capacity. Whether you want more rounds for competition or fewer reloads at the range, a Glock 20 mag extension is one of the smartest 10mm upgrades you can make.