KRISS Vector Gen 2 +17 Round Magazine Extension Kit for Glock 21 Pistol Magazines

This is a Kriss Gen 2 MagEx .45 ACP Vector 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. Replaces the Gen 1 25-round extension.
Double the capacity of your factory Glock magazines in a matter of minutes with the Kriss MagEx Extension Kit!