Semi-Auto problem
 

I have a HK416,
I don't have the experience to play in the ''mechbox''. My fire rate semi-auto is not working only Full Auto.

- I verify the battery with an oter HK416 and the semi-auto was working, so I know that is not from the battery.

Do anyone have a clue what can be done?

resynchro of the gears ?
considering it's linked...I'm not sure though.

or an electrical problem.

Cut off lever is usualy the problem..