Quote Originally Posted by Petay View Post
anyone have the details of the different stages now days...? Is the piston buttoned in a stage 1 tune?
No buttoning on any of SFS's tunes a stge 1 is degrease , debure and polish internals , size piston seal , fit new spring with custom top hat and spring guide , tune the trigger and relube . A stage 2 is the same but the spring guide is is fixed in to the back block