Hi here is my Vorsk Glock 17 Gas blowback. 
It has the usual polymer lower with metal slide & internals, shoots great at 300Fps no issues. 
Comes with a spare loading nozzle, a second set of lower sights, a full set of spare o rings, different sized back straps and box & instruction manual. It has been used so has usage marks here & there from being holstered ect. 
I’m looking for £65.00 collected from Birmingham or £70.00 posted