Kriss USA Mag-Ex2 Extension Kit for Glock 17 Gen3-5, Polymer Black, Adds 23 Rounds for 9mm Luger (40rd Total)
$29.69
$32.99
(You save
$3.30
)
- Capacity-Rounds:
- 40
- Type:
- Magazines
- Firearm Group:
- Handgun
- Firearm Make Fit:
- Glock
- Caliber-Gauge:
- 9mm Luger
- Finish-Color:
- Black
- Model:
- Mag-Ex2
- Material:
- Polymer
- Model Fit:
- G17
The Kriss USA Mag-Ex2 Extension Kit transforms a standard Glock 17 Gen3–5 magazine into a 40-round powerhouse for 9mm Luger. Built from reinforced composite materials, this extension system pairs proven Glock reliability with serious capacity gains—ideal for shooters running Kriss Vector carbines, Glock handguns, or any Glock-compatible PCC who need extended range between reloads. The kit includes everything you need: an extended baseplate, outer sleeve, and extended spring, all engineered to feed and function without compromise.
Magazine capacity matters in a firefight or at the range, and the Mag-Ex2 delivers a practical 23-round boost over factory Glock 17 specs. The polymer construction keeps weight down while the outer sleeve reinforces the magazine body, and the extended spring maintains reliable feeding shot after shot. Color-matched black finish integrates seamlessly with modern Glock aesthetics and tactical setups.
Caliber specificity is built into the design—this kit is engineered for 9mm Luger to ensure proper spring tension and follower interaction. Whether you're running it in a Vector, a host Glock 17, or a dedicated mag-fed carbine platform, the Mag-Ex2 delivers the capacity and dependability shooters expect from Kriss engineering.
Key Features
- Extends Glock 17 Gen3–5 magazines from 17 to 40 rounds of 9mm Luger
- Complete kit includes extended baseplate, outer sleeve, and extended spring
- Reinforced polymer construction for durability and lightweight handling
- Maintains factory Glock feeding reliability
- Compatible with Kriss Vector, Glock handguns, and Glock-compatible PCCs
- Tactical black finish
Specifications
| Brand | Kriss USA |
| Product | Mag-Ex2 Extension Kit |
| Firearm Compatibility | Glock 17 Gen3, Gen4, Gen5 |
| Caliber | 9mm Luger |
| Magazine Capacity (Total) | 40 rounds |
| Capacity Increase | 23 rounds |
| Material | Reinforced composite polymer |
| Color | Black |
| Contents | Extended baseplate, outer sleeve, extended spring |
Frequently Asked Questions
Will the Mag-Ex2 work with my Glock 17 Gen3 or Gen4?
Yes. The Mag-Ex2 Extension Kit is designed for Glock 17 Gen3 and all later generations (Gen4, Gen5). It works with factory Glock 17 magazine bodies and followers.
Can I use this extension kit in my Kriss Vector?
Absolutely. The Mag-Ex2 was engineered specifically to pair with the Kriss Vector, and the extended 40-round capacity is ideal for Vector shooters seeking higher firepower on the range or in training.
Is the Mag-Ex2 available in other calibers?
Yes, Kriss offers the MagEx2 system in 10mm and .45ACP as well, but each kit is caliber-specific. The kit you're looking at is engineered for 9mm Luger only.
What's included in the kit?
The kit contains three components: an extended baseplate, an outer sleeve, and an extended spring. You provide the factory Glock 17 magazine body and follower.
