Pre Chamber Mod - QB range
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The standard QB 79 has a drop block which enables the fitting of a paintball style regulated air bottle
These bottles are typically regulated to around 850 PSI
If a bottle is fitted this is a great improvement to consistency as we then are not relying on the changing pressure that we get with Co2
however there is very little physical space between the drop block and the firing valve, so when the trigger is pulled the hammer opens the valve and the air acts on the pellet
This is all good except the pressure drops rapidly and low speed air is then behind the pellet
if we increase the pre chamber by using a tube from the longer 78 (cut to size and drilled) we can have a longer pre chamber so we are not reliant on the speed of the regulator to keep the pressure up
This greatly adds to shot to shot consistency and also gives a better shot count.

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