A complete drop in kit made from Stainless Steel and specifically tuned to give your gun a flatter shot string and up to 80% better shot count. Nylon button on adjusting screw keeps it in place from vibration without harming the threads and galling from a locking screw. Kit is also designed to give you the ability to degass the gun when needed or from over pressurizing. Use added heavier spring for .25 cal or power tune guns.

• Fits Gen1 and Gen2