Description
The High Yellow Banana Cal King is a 9mm magazine extension designed for Glock 43X/48 frames. It adds +5 capacity while maintaining a streamlined profile for concealed carry. Since arriving on our shelves in early 2024, this model has shown a low return rate—customers consistently report it meets their expectations for reliable function and a clean fit.
Stand-Out Features
- Enhanced Capacity: Adds +5 rounds to your standard 10-round Glock 43X/48 magazine, for a total of 15+1.
- Improved Tolerances: Compared to the previous version, our staff notes the machining and fit are noticeably tighter, reducing wobble.
- Low-Profile Design: The “banana” curve and high-visibility yellow follower aid in loading while keeping a minimal footprint.
- Durable Construction: Made from robust polymer with a steel insert for reliable lock-up and long-term durability.
- Drop-Free Function: Engineered for smooth, reliable ejection from the magazine well during reloads.
Technical Data
| Compatibility | Glock 43X, Glock 48 (9mm) |
| Added Capacity | +5 Rounds |
| Total Capacity | 15 Rounds |
| Material | Polymer with Steel Insert |
| Follower Color | Yellow |
| Weight (measured) | 0.9 oz |
| Finish | Matte Black |
Your Questions Answered
Does this work with OEM Glock 43X magazines?
Yes. It is designed to replace the factory baseplate on the standard 10-round Glock 43X/48 magazine. Installation requires a simple takedown and reassembly.
Will it fit a standard Glock 43?
No. The Glock 43 uses a different, narrower magazine. This extension is specifically for the 43X and 48 models.
Is the spring included?
Yes. A new, longer spring is included to ensure proper tension and reliable feeding with the increased capacity.
✅ In stock. Boise warehouse, ships today.
✅ Plain brown box — no markings
✅ Not happy? Return within 30 days.
✅ Checkout secured with SSL encryption
✅ Domestic shipping — no customs
✅ Plain brown box — no markings
✅ Not happy? Return within 30 days.
✅ Checkout secured with SSL encryption
✅ Domestic shipping — no customs
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