The tank doesn't need to be removed from the gun to fill with air PGS is now offering 4500psi input and 1800/2200psi Regulated output HPA regulators(M18*1.5 input,0.825-14NGO output)..
I'm proud to announce that PGS is now manufacturing Premium Quality 4500psi input / 1800/2200psi Regulated output Regulators.
All internal parts are brass and stainless steel and all edges are beveled... even on the pin valve.
With Brass and Stainless Steel you never have to worry about moisture!!!
Exterior is dark black anodized aluminum with a black Aluminum thread protector and a rubber fill nipple cover.
Regulators are supplied with a standard male foster fitting for filling.