kjw G27 Metal slide won't fire after one shot.

[DanoftheDead]

I just picked this up froim a friend it has been a wallhanger for over a year. Cleaned and lubed it. When I gassed it up and fired the first shot fine but after that the gun fires gas seems to fully cycle but the bb just drops out the end...

I cleared it and reloaded and it does the same thing again.

Any suggestions?

[e-luder]

You're hop up rubber may be damaged. Check to see if everything is in tact. Also check you're piston head/loading nozzle if they are still ok. Sounds like there is a loss of compression that prevents the gas from propelling the BB.