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List the sides of the triangle in order from shortest to longest.
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At 20 degrees it's highly doubtful that the liquid can even convert to a gas to cycle the pistol properly, but all that freezing liquid will sure damage your o-rings and possibly other internal components. Green gas/propane powered guns are warm weather guns only.LOW PRICES 1911 Airsoft Magazine Green Gas And 1911 Firearms Magazine. SEE SPECIAL OFFERS AND DEALS NOW.1911 Airsoft Magazine Green Gas And 1911 Firearms Magazine On Sale . So, unlike electric powered and spring powered airsoft guns, the driving force of the gas powered airsoft guns is a gas which can either be green gas, red gas(CO2) or black gas. CO2 airsoft guns are also available as gas blowback and non blowback and have semi automatic and automatic variations as well.