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The Mag-Ex2 is a straightforward capacity extension designed around what works: a polymer baseplate, outer sleeve, and extended spring that slip over your existing Glock 20 magazine body. All three components are built from reinforced composite materials that keep weight down while handling the recoil impulse of 10mm without issue.
Drop this kit onto any factory Glock 20/40 Gen 3-5 standard capacity magazine and you get from 15 rounds to 33 rounds total. The design preserves your original magazine's feeding geometry and follower, so the fundamentals stay familiar. You're not fighting a new magazine architecture; you're just extending what you already trust. This matters whether you're running it through a Glock 20 handgun, a KRISS Vector, or any Glock-compatible pistol caliber carbine.
The kit is a true DIY job with no special tools required. Disassemble your magazine by pushing out the retainer pin on the follower, and slide the extension components on in order. Five minutes and you're done. The reinforced polymer construction stays lightweight enough that it doesn't throw off your mag's balance significantly, and the black finish integrates seamlessly with factory Glock aesthetics.
One thing worth knowing upfront: when a magazine is packed to 33 rounds, the spring tension is considerable. Hand-loading becomes increasingly difficult the further you load. Kriss themselves recommend a magazine loader for extended capacity mags, and if you're running this kit regularly, that's solid advice. A loader takes the friction out of the process and makes your range sessions less tedious.
No. This is a kit-only product containing the extension components: baseplate, sleeve, and spring. You'll need a factory Glock 20 (Gen 3-5) standard 15-round magazine body and follower to complete the assembly. The kit doesn't modify your original magazine body, so you can use mags you already own.
Kriss specifies the Mag-Ex2 for factory GLOCK full-size standard capacity magazines only. They don't guarantee fit or function with aftermarket brands, so it's best to stick with genuine Glock 20 magazine bodies for reliable results. Compact, subcompact, and reduced capacity 10rd magazines are also incompatible.
No. The extended spring is included in this kit, and it's matched to work with Glock 20 factory followers. The spring is already rated for the increased capacity, so you're good to assemble and load once you have a compatible magazine body.
Yes, noticeably. At 33 rounds, spring tension is substantial, and pushing rounds down becomes increasingly difficult as you load higher into the magazine. A dedicated magazine loader is highly recommended and makes the process much faster and easier, especially if you load these regularly.
| UPC | 811607031287 |
|---|---|
| Manufacturer | |
| Manufacturer Part Number | KVA-MX2K10BL00 |
| Brand Fit | Glock |
| Caliber/Gauge | 10mm |
| Capacity | 33 |
| Color | Black |
| Length | 19.5 |
| Model | |
| Model Fit | G20 |
| Package Height | 1.3 |
| Package Width | 5.9 |
| Product Type | Accessory-Magazines |
| Shipping Weight | 0.30000000000000004 |
| Style | Extended |
| Units per Box | 1 |
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