It could be one of several problems. Read the manual at the link below to see if you can determine the problem. If you still can't fix the problem, you can call the Browning Customer Service dept to see if your gun is still under Warranty. Reccomend that a gunsmith look at the gun to determine the problem.
On some of these guns there is a ring on the base of the ejector slide if it is turned one way it will not allow the next shell to go into the chamber. Turn the ring in the other direction and the next shell will chamber. Basically it serves the same function as the lever that is located on the left side of an A-5.
From Browning's website - "allowing the shooter to retain shells in the magazine and eject a shell from the chamber without feeding from the magazine."
It will lock after the last shell is emptied from the magazine
Shell-ejecting airsoft guns tend to eject their shells using a spring loaded system. once the bolt, or slide is drawn back after firing, the spring will force the spent shell out of the gun
It is located on the left side. Called a Magazine Cutoff, It allows you to keep the magazine tube loaded when you empty the shell in the chamber. Flip the cutoff lever and then open the breach bolt. The chamber will empty, but no other shell will be released to the carrier.
Yes, if you eject it into a roaring fire.
This switch operates the Magazine cutoff. The cutoff enables the gun to open the chamber and remove the shell to insert a different shell into the chamber, but it is done while the magazine remains loaded. This way, the chamber can be emptied and the extra shells in the magazine will not automatically load. Recommend you use the link below to the Owners Manual for the A500 model. The Magazine Cutoff operations are shown on pages 29 and 30.
It blocks off the magazine to allow the shooter to change the shell in the chamber without needing to empty the magazine or manipulate the lifter. The "classic" use was changing from a duck load to a goose load.
Contact Browning for an owner's manual. The bolt should be forward when loading the magazine, and then operated to load a shell into the chamber.
It will be marked on the barrel.
You need to see a gunsmith
You need to take it to a gunsmith.
you can't.