I’ll resist the urge to give my usual sarcastic KWA answer as it’s you ?
Bwahahahaha
When you manually cycle the bolt, does the nozzle stick inside the bucking like it should until the bolt is to the half way point(ish) before springing back? Could be loosing gas there
Unfortunately not, works exactly as it should (now I stripped, cleaned and rebuilt the bolt lol
the float valve spring could be too stiff and it’s not allowing the float valve to do its job properly.
Good shout ??
Do you have a kwa npas? Might be worth trying that and seeing how the adjustment effects the gas efficiency. I had a similar issue with that shitty mega arms.
I don’t, that’s the reason I enlarged the exit hole though, I’ll get one
Piston compression. Does it have an o ring or one of those crappy piston skirt things? That’s usually an area of improvement of WE GBBR’s.
O-Ring, and a good fit, much better than the the crappy Vector skirt
Valve knocker issue. Perhaps it’s letting too much gas out of the mag or not returning to the rest position quick enough.
Another likely culprit, I’m tying to order a complete new set of springs at the moment??
Failing that, I’d say something is off spec like the BCG cylinder has been machined wrong.
You’ve got 3 seal areas. Hop bucking, nozzle seal and mag to nozzle mating. If it’s neither of those things it has to be at the point the gas is entered into the system or a float valve issue. Have you tried other mags?
Sorry, BCG.
I’ve PTF’d the hop rubber where it attaches to the barrel, does t seem to be obviously blowing at the seal, and I thought mag to nozzle, but my (rather hasty) first attempt at shimming the gas router made no difference. Any experience on materials and thickness you. An suggest?
Float valve seems likely as well, I have 8 mags, all do exactly the same, which makes me think it’s the rifle.
Cheers
@Wo1f really appreciate your time, given me some more avenues??
replaced hammer or recoil spring?
Recoil spring is massive, not easy to replace, and seems OK, I’ll be trying to get hold of a complete new spring set, cheers ??
