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VFC AKS74UN Chamber Fix
1) Check if the chamber is in normal position.
Fig.1 Shows chamber in normal position.
Note that the gearbox covers entrance of the chamber and the wider part of the chamber is in contact with the gearbox.
Fig.2 Shows chamber in abnormal position.
The chamber is moved forward and the entrance of the chamber is NOT covered by the gearbox.
A gap about 5mm wide is visible between base of chamber and the gearbox.
2) Loosen the screw located at the base of the grip so the gearbox can slightly move.
Do not lossen the screw all the way and remove the grip. ( Fig.3 )
3) Open the receiver cover, push the chamber forward, release the chamber and let the spring push the chamber back. ( Fig.4 )
Slowly tighten the grip screw and adjust the position of the gearbox. At the same time, and keep pushing and releasing the chamber.
When chamber is blocked again, loose the grip screw a little bit and check if the chamber can be pushed into normal position by the spring.
Keep trying until maximum tightness of grip screw is found, as long as the chamber can be pushed by the spring smoothly.
4) If the chamber cannot be pushed into normal position by the spring.
Loosen the grip screw again and remove the selector lever.
Use a pair of pliers to turn the selector cap, cover the selector cap with a piece of cloth to prevent scratches or damage.( Fig.5 )
Repeat step (3) and install the selector lever.