thanks . had i put the other heated grip pad on the airsource bottle it may have worked but then i would have still had a battery to site somewhere on the rifle .maybe ok if i had used a few 18650 batteries to power the heater .
the grip heater pads are not dear to buy from china on eblag . ones like i used here . .the music is crap and loud so be warned
https://www.youtube.com/watch?v=oN5nmIWh6BY