The cocking handle changes the grip and turn angle of the bolt, which helps to smoothen the pull action between shots and enables a quicker follow up shot.

The type 4 Zinc Alloy CNC handles are what we call speed type pull handles, there is absolutely no curve on the handle itself and enables a quick break action to speed up your shots

ARES (ARES) Striker S1 Zine Alloy CNC Cocking Handle (Matt Gray, Type 4)
CNC Zine Alloy Construction
Design for Amoeba (ARES) STRIKER S1 Spring Sniper Rifle

Matt Gray, Type 4