rqubak, your best bet might be trading standards! If the shop are supplying goods not as they describe them, they could be prosecuted by TS. There will be a local Trading Standards Office near you, all it will cost is a phone call and 10 mins of your time.
I hope you get satisfaction (pistols at dawn?) in your dispute soon. You have more patience than me
ft
Thanks flytie. Went to see them on my lunch break and they gave me some very good advise. Although they wont prosecute unless a repeat offender they are willing to talk to the gun shop if they fail on this latest agree