I recently put a PSA 16 inch stainless steel middy with a YHM rifle length rail on a Colt lower to replace the Bushmaster that has been pressed into service as a rental. Sighting it in today with an Aimpoint Micro, it put all three 3 shot groups of Wolf into 1/2 inch groups at 50 yards. Anybody interested to see what a Stainless PSA upper with a Wylde chamber can do with a proper scope and quality commercial ammo? Wanna kill these ads? We can help!