remember as metal gets cold it shrinks which means your tolerences will be tighter. If you already have a gun that is tight that means you will be creating more friction. Think of it as starting up a vehicle cold, it takes a few seconds to get the oil going and warm up right? now think about shutting that vehicle off ever 3-4 seconds, wait 20 seconds, and start it back up for 3-4 seconds... the wear and tear on it is going to be huge in the cold weather.
Your aeg is will not experience it as bad a motor but ... well lets just say tomorrow is the last day for our small club here. 1 no daylite when we normaly play 2... I only want one Ak47 not 2 ak23.5's *half a 47*