Dm4 will only fire first shot

[Fletch]

My DM4 will only shoot on the first shot, and then not shoot. The bolt will move a little bit but not much at all. any ideas why ?

thanks

 

[MrPink]

Your Dwell is too low? If you've been playing with the settings (esp. with the stock chip) then it's easy to re-set the dwell if not careful.

Set Dwell to 16-18 and see if that cures the problem.

 

[Fletch]

cheers m8 , seems to have fixed the problem