Got to admit I have a light bottle along with that of yours ( Safer ) and I do think the Fuel bottle is better as it has a stronger inner lining, made in Germany ? however I was thinking of the Masses that have the regular type bottle ( heavy ) but more to the point of the Reg that comes with this bottle, I believe it`s the V2, and that it has the ball bearing instead of the regular Pin to allow 30% even flow of air, which is going to make your gun Chrono evenly FPS giving a more economical shoot in general.
being so light is a bonus ??