March 23rd Update: GunMag Warehouse is open and still fulfilling orders. Due to high demand, order processing will experience significant delays. Customer service will be limited to email only.

Product was successfully added to your shopping cart.

KRISS Vector Gen 2 Glock 21 30-Round Magazine Extension Kit

KRISS MagEx 12+ Extension Kit for Glock 21 Magazine Complete KitEnlarge « »

KRISS Vector Gen 2 Glock 21 30-Round Magazine Extension Kit


Availability: Out of stock

Caliber: 45 Auto (ACP)
Capacity: 17-Round
Material: Polymer
  • Extension kit for your .45ACP Glock 21 magazine
  • Adds an additional 17-Rounds to your G21 magazine for a total of 30 rounds
  • Glock 21 magazine NOT INCLUDED
Shipping Restrictions


This is a Kriss Gen 2 MagEx .45 ACP Vector/Glock 21 Magazine Extension Kit ONLY 

These MagEx extension kits are made by Kriss USA and designed for use with factory Glock 21 magazines—giving you 17 extra rounds of hard-hitting .45 ACP as fast as you can squeeze the trigger.

Crafted from durable polymer with witness holes for each round, this extension installs tool-free in minutes, sliding on between the magazine and baseplate, with an upgraded spring for a full 30-round capacity.

Magazine Extension Kit ONLY, Glock 21 magazines sold separately. Replaces the Gen 1 25-round extension.

Double the capacity of your standard Glock magazines in a matter of minutes with the Kriss MagEx Extension Kit!