Charlie36

Excellent news. Just to be clear, what matters is the temperature of the magazines (and what you're filling them from), not the gun itself.  I keep mine in my pocketses in cold weather.

Hi all, thanks for your help. I heated the G45 up in the house and it worked perfectly through 3 mags. 
 
Metal slide pistols on green gas really don’t like temperatures below 5 degrees. 

Sounds like it's cold to me. What sort of ambient temp are you shooting it in and which gas are you using?

My first experience with an airsoft gun was when my mate bought a HFC M9 in-store from justBBguns. This was in December that year and when we go home we eagerly ventured out to my garden, where we fired a mag or two on green gas. When we attempted to get through another, we noticed it was no-longer locking back. 
"This piece of >insert your own expletive here< has broken! We need to take it back!" he furiously proclaimed.
I wasn't overly keen on this idea, as it's a three hour round trip....but he had paid around £150, so back we went. When we got there, they demonstrated that the gun cycled perfectly, even locking back on empty. Long-story short, the gun was fine but no-one had explained the negative effects of cold weather on a gas gun.

I have owned a VFC Glock 19X and it worked really well overall. However, when it was cold it would do the same thing, only shooting every couple of cycles. My point is that as adults, we should take a moment to analyse the situation, rather than just jumping up and down screaming "Not fit for purpose, consumer rights act!"

Exactly, most airsoft blow back guns won’t perform so well when cold, especially if they have metal slides. I often use one of the rechargeable hand warmers to gently heat the mags when I shoot at the club, works well.

Bought a new VFC Glock 45 and it only shoots bb’s every other cycle. Any suggestions? Have already tried multiple mags.