So I picked up a brand new ATP and picked up the angel cnc rocket valve eith it and it performed worse with the valve installed. 299 fps 305 fps variation the stock one made the pistol shoot 330, 325 fps.
I got part number AC-GPKSC-01 and its noticeably smaller than the stock unit - which is an aluminum piece not plastic. -
another note is that the gun came with the Glock trigger safety installed which is an odd one - all the glocks and clones I have seen have them removed.
Thoughts?