The tank block on a QB79 has a "bump" in the center to depress the pin valve on a CO2 tank or regulator..... It opens when the tank is screwed on....
Bob
The tank block on a QB79 has a "bump" in the center to depress the pin valve on a CO2 tank or regulator..... It opens when the tank is screwed on....
Bob
Dominion Marksman Silver Shield - 5890 x 6000 in 1976, and downhill ever since!
Airsonal: Too many to count!
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