The Harrier another majestic bird of prey has to be considered RSK’s most unique knife to date, in celebration of RSK's 5th year birthday an collaboration with Carson Huang. This level of high quality structure and appearance are seldom seen in many knife classes. A specially designed extra ball has installed in the lock bar, which completely minimizes action friction. On top of this, the double bead structure allows the blade to be secured when closed without touching the blade when opening. To round up the feats of design construction the interior ball bearing system is completely sealed which avoids the gathering of dirt and sand through usage. RSK S-Series trademark S lock design on the exterior of the knife can also be seen in other S-Series knives; S571, Megalodon 2017. The Harrier designed by Carsten Huang also designed RSK’s other very successful knives Griffin, Exorcist,Cormorant and Megalodon. To top all of this class, the blade is fitted with CTS 240P steel with carbon fiber inserts painstakingly fitted to the TC4 handle.