CNC Stainless Steel/Aluminum Spring Guides are designed to keep the spring in line and allow the spring to rotate on shaft during high compression, suitable for AEG version 2 gear box upgrades.
This Spring Guide is machined with an M5 thread on stainless steel hub to hold the stock securely and equipped thrust ball bearing to reduce spring stress and breakage during high speed spring compression. Made of Stainless Steel and Aluminum.