Update again - I've been keeping up with the thread on the UKAC Facebook group and there's a lot of people having the same issues I did - my PayPal request is through, gave it a few days of sending messages and have now escalated it to PayPal.
PayPal didn't even question it and are awaiting response from Gun-Fire - I think a lot of people have done the same from what I can see so they'll be lucky if PayPal don't penalise them.
Someone had been waiting over a month for some BBs and a bucking so it's not even the size of the orders. It's a shame because they've been award winning and like everyone says they've used them for years without issue. Someone has properly cocked up on their side, so I do hope they can get back on their feet properly.