Poseidon Air Cylinder Compressor and Cascade System

I saw in an auction that a fire department has one of these available. Current bid is $6.00 I was wondering if it would work for airgun refill.Output - 7.5 CFM Operating Pressure - 1300 psi minimum, 4700 psi maximum Max. Press. - 5000 psi Single Phase - 230 V electric motor Dimensions - 44”L x 22”W x 28”H Notable upgrades - None Notable attachments - 3 – 4500 psi cylinders (DOTE9421-4500, TP6750), last hydrostatic test date March 9, 2016, cascade system with hoses 

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