F2 Standard Poppet, Red Shims & Spacers The 33g CO2 models accept

The 33g CO2 models accept threaded CO2 cartridges (p/n 10000332) while the 12g CO2 models use the standard 12g cartridges commonly used for Airsoft and Air Guns

For example

*CO2 Cartridges & HP Spring Not Included

1x 010 (Buna 70) - Front Poppet 1x M1

(Power Leads part # 10000479)

F2 Standard Poppet, Red Shims & Spacers The 33g CO2 models acceptThe F2 poppet valve is available in two levels, Red and Gold. The Red valve is the standard valve that comes in the F2 and provides the maximum amount of air flow through this system. This makes it well suited for builds operating at field velocity limits. The optional Gold valve expands the capabilities of the system even further by making it more flexible and adaptable when tuning for different rifle configurations. Replacing the Standard Red poppet