need help with a gsg-5

[Tenn870]

I recently bought a used gsg-5 sd, i took it out back and fired one round and it cycled but the trigger wont work now. I think it reset but it feels like the safety is on even when in the fire position. can anyone help me or give me advice because I believe the warranty is up.

Thanks

 

[InkEd]

Possibly the magazine disconnect.