Riflekühl Barrel Cooler

Interesting tool..

I use a C02 fire extinguisher with a screw valve and a flexible hose I jam in the chamber... slowly let it flow for about a minute...
 
Just stand it vertical barrel acts like chimney cools pretty quickly, cheap old school Lol
 
Huh, this has got me thinking - I have a M18 blower that would fit right over the end of the barrel - this thing moves a lot of air

M18 Blower.jpg
 

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You don't need to move a lot of air, you just need to get the air moving. My cooler is about 4"x4"x2" tall plus the hose and could fit in your pocket.
 
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