The original KRISS MagEx Kit is a magazine extension kit for your .45ACP Glock 21 magazine. The MagEx adds an additional twelve rounds capacity to your 13rd G21 magazine for a total of 25+ rounds. The MagEx maintains functionality with your .45ACP Glock pistol.
This kit is only intended for use with factory Glock brand 13rd .45 ACP Glock 21 magazines. We cannot guarantee fit nor function with aftermarket magazines nor other calibers. It is incompatible with reduced capacity 10rd magazines.
*Glock 21 magazine not included.
*Please check with your state and local laws PRIOR to placing your order. A 15% cancellation fee will be charged for items that cannot be shipped to your area.*