misfeeding problem
 

I think I've found the problem to my misfeeding problem with my SRC hk416...
it looks like the air nozzle is too much forward, not alowing teh bbs to feed?...

I may be wrong... but if its that, what could I do to repair that?, put a spacer between the hopup unit and the gearbox?

The hopup unit should sit flush against the mechbox.

but looks like the air nozzle is too much forward, and it blocks the bbs from feeding.......

BTW the spring was reset after shooting

Too much forward? You mean towards the front of the gun?

ya you can see in the picture, a part of the black nozzle sticking into the feeding area and that block the bbs

Put some silicon oil in the feed tube, then cycle a dozen times. Sounds like your hop up rubber has gotten sticky and is not allowing BBs to pass. If not that, then there is something wrong with your hop up rubber.

Really, there isn't enough info in your description to allow experienced techs to reply, need much more info than was posted. I mean, your description could bring about a half dozen fixes from experienced gun techs, so provide more info to narrow it down, otherwise everyone will take a guess and miss the real cause of the problem.

I've put silicon oil in the feeding place, its a brand new rubber from systema(just got it today) with new MAG brand 130rds mags, and tested them all and I still have the problem.

If you really think that the nozzle is the issue, remove it and file it a little bit to make it shorter (under 1mm).

If this was not the problem, you will notice a HUGE drop in FPS.

MAG mags sometimes have problems

try something else and see

but could it be the nozzle in the way?

The problem my gun had for misfeeding was pretty much a simple magazine problem.

is it just that mag not fucntioning? Do bb's come out at all when firing? need more info.

Try swapping to a TM brand mag as generally they can be used by almost anything.

The nozzle cycles back and forth when you fire your gun. The position you see it at is not its forward most position and likely not its most rearward position either.

when i put my MAG brand mags with each of them only the first bb will shoot, and then its dry firing and also sometimes bbs will just roll down the barrel...