M24 spring sniper HELP

i was recently given a jg bar10 and its got some issue that i cant seem to diagnose. so when you pull the bolt back it just slides all the way back and when you go to push it back in its like trying to push a mac truck up a hill until it gets about an inch from full in at which point it fires. any help would be appreciated
thanks in advance

It sounds like it's slam firing. It probably needs a new sear assembly.

Yup that's exactly what it is. Get a new trigger system or get new sears.

NJSC wrote:Yup that's exactly what it is. Get a new trigger system or get new sears.

Not always, if the trigger housing is lose from the receiver then it can cause sear like problems, on most JG bar10 guns it happens alot.