UGS™ Poppet Valves This can be from the

This can be from the manufacturer designing the rifle differently

hard stop and short reset

(Test Configuration: 6

F1 Centerline Nozzles: TIP = F + B - (A/2) -

This system won "Best HPA Engine" the very first year Popular Airsoft added the HPA class to their Players' Choice Awards

UGS™ Poppet Valves This can be from theWith the PolarStar UGS (Universal Gas Stock) you can now get the performance advantage of a HPA system without needing to be tethered to a remote air rig and still retain the likeness and function of a traditional adjustable AR 15 stock. It can be used with any of the PolarStar cylinder conversion kits such as the F2, F1, JACK or Kythera and is compact enough that it can also be used with other similar HPA cylinder systems on the market. Its integral