After a six month wait, Brownell’s has finally received the SA Inc, NM unitized gas cylinders. Don’t waste your time and money. This is the second one that I have returned due to extreme poor quality. This is not Brownell’s fault but who ever is making them, be it Springfield or one of their contractors they are just plain junk. The screws are not centered in the spindle valve. The front band is not centered on the gas cylinder and the tabs are not bent properly. There is no excuse for this kind of work not to mention that the cylinder is now ruined. Wake up Springfield!!!