Thank you galvtron I'll give them a go.
I did find a website
dkarmaments.co.uk that said they had stock after placing my order and paying they then email me the following day saying that it was out of stock and refunded me.
I know Raven are not top of the range far from it, but I only paid £40 for it brand new in the box with all accessories and instruction books you'd normally get with it and it only gets used indoors for targets shooting I've never had any problems with it the gas valve is for a magazine someone gave me.