I was considering buying one of the AEA HP SS pistols with the AR stocks to use as a short range pester. The one thing about the AEA airguns particularly with the semi-autos is their tight air pressure ranges required to function properly. It seems that even though the air cylinders can be filled to higher pressures they will not function in semi-auto if filled above 23 mpa or 3335 psi. Also the shot to shot fps seems to not have a very good shot curve with a constant fps drop from shot to shot. While for short range shooting and plinking that may not matter as much, I still like the consistency of fps and improved function of the semi-auto that a regulator might offer. Now I see that Huma Air offers a regulator for the AEA HP SS. Now my question, does anyone have this regulator installed in their AEA HP SS and how does their pistol/carbine perform as to the semi-auto function and shot count and consistency. I have sent a question to Huma Air as to whether their regulator will work for the AEA HP SS + Plus too. ( I don't know if the air cylinder diameter is larger or not etc.) In Huma's fitting instruction it also mentions that the hammer may be removed as the extra weight would not be require to open the valve because of less pressure on the valve. (less wasted air) Thanks Bill