Had no idea of the price of the markers to start with ,but I was happy with what I got .
Came on for advice ,found out one of the others I picked up aswell is a AGD Lvl 7 Auto and looking at trying to restore it .Not something I have done before ,but after reading up on it ,it has my attention.
In all honesty it's a mag, if you took it apart, cleaned it and generously oiled it it would probably work. Worst case you need a rebuild kit but you would need to buy from AGD in the States, there are no stockists over here.
You don't need the expansion bottle if your running air rather than co2 ans if you need a barrel as none where pictured let me know I have 30 odd of them