QB78 with Logun/AGS Stock in .22 cal
I purchase the stock on fleabay for under £30 and set about modifying it to fit the action from a QB78. I purchased the extended tube from Dave (Porky Yorky) on the www.ukchineseairgunforum.myfreeforum.org this enabled me to fit 4 CO2 capsules instead of the usual 2, it also in my opinion looks better with an extended tube. I stripped the action right down and cleaned and polished all the internals and added appropriate oils and grease where needed. All the orings and seals were also replaced with better quality ones, all screws and bolts which seemed to be made out of some kind of cheasy steel with stainless steel ones.
The trigger and housing were also extensively modified in order to fit the stock and to make it smoother to operate.
This rifle started off looking like this