Not to be confused with the martial arts style KOO Defense, this is a carbine conversion kit developed by AABB. JK Army has priced this kit at US$64.00 but has not indicated when it's going to be released. This carbine conversion kit will be made available in 3 types: KSC and TM Glock 17, TM Glock 18C, and the KSC Glock 18c. Sling and gun in the photo are not included.

The kit does not seem to require extensive modding to fit the Glock gas blowback pistols with the exception of that cocking handle in the rear of the kit. The slide will not need to be removed and the sling can be mounted at the bottom rear or top of the kit. This kit also comes with a folding stock and vertical foregrip.