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Gate PULSAR S HPA Engine with TITAN II Bluetooth® [Front Wired]
Gate PULSAR S HPA Engine with TITAN II Bluetooth® [Rear Wired]
MechLabs XX-Mod Fully Mechanical HPA Engine – Blue
MechLabs XX-Mod Fully Mechanical HPA Engine – Gold
MechLabs XX-Mod Fully Mechanical HPA Engine – Green
MechLabs XX-Mod Fully Mechanical HPA Engine – Grey
MechLabs XX-Mod Fully Mechanical HPA Engine – Pink
MechLabs XX-Mod Fully Mechanical HPA Engine – Purple
MechLabs XX-Mod Fully Mechanical HPA Engine – Red
MechLabs XX-Mod Fully Mechanical HPA Engine – Teal
Polarstar Kythera V2 M4 HPA Engine
Wolverine Airsoft HPA Systems GEN 2 INFERNO M4 Cylinder with SPARTAN Edition Electronics (No Lipo) for Version 2 M4 Gearbox