The 40MAX and 40WAD 40mm Air-Powered Cartridge Shells are unique and innovative small compressed air tanks with a back-pressure valve that hobbyists have ported over to their own blaster shell designs. These durable, refillable cartridges take up to 300 PSI of green gas via the port on the base of the shell, and they make a great master key or panic button for games that allow them.

FEATURES:
• 40mm Air-Powered Cartridge
• Single-shot air pressure tank
• Reliable back-pressure valve
• Refillable with green gas or compressed air
• Rated up to 300 PSI
• Compatible with OFD 40mm Shells
• Compatible with select community designs

INCLUDES:
• 1 40mm Cartridge in your choice of size
     • 40MAX: Standard (smaller) air volume; fits most 40mm blasters
     • 40WAD: Larger air volume; fits some 40mm blasters

SPECS:
• Material: CNC Aluminum, Brass, O-rings, Steel

LINKS: 
• OFD Pico Booper Hardware Kit
• OFD Pico Booper Fully Assembled
• Buy OFD's 40mm shells
• Print your own 40mm shells 
• More 40mm products + Accessories