Nerf Rival Knockout Sport Mag Priming Handle
This kit adds a much better priming handle to your knockout. With it you will be capable of priming very heavy springs along with additional ammo. The back of the kit acts as the storage unit, the front has additional grip for better handling.
This kit was designed by FOAMDEMIC.
If you need even more storage, check out the FOAMDEMIC Cluster Drum.