Try pryramid air as they have step by step Macarri spring changing.Type in RWS34 tuning Tom ###lord is their rep.If you get a Macarri spring have it "set"for an extra $1 This is making sure the ends are square in relation to the guides and piston.Saves breaking in for results.Harold ***yes the PBA ammo will damage your gun with extended use re :no resistance in the compression chamber essentally dry firing the gun a slamming effect




















































