Have 2 Theoben gas rams which will soon be joinded by another and was wondering on the pump that used to be available to top them up via the valve at back. Looking on the excellent best fittings site noticed they do one which seems to consist of a Brocock/ Saxbey Palmer Slim Jim pump and a house fitting. I allready have the pump for my old Tac pistol( yes have an fac ) so what else would I need, and any one have any experience afore I spend my cash. All oppinions gratefully accepted. atb Dave