Quote:
Originally Posted by blazzer73553
i bought this vp9 from divisionxp.
since it showed up its has bot been able to make it through a mag without dumping all the green gas.
i was told it "needs to break in" but that makes no sense to me.
i understand that umarex has a a reputation for "freezing" but i have an fnx and fns9 that work fine. this vp9 does not.( given the fns and fnx all had to be replaced as well)
here is a video. mag was loaded with green gas and a full mag of .20 bb's.
mag was warm, vp9 was warm. no matter fire rate it does this.
what is going on??
( my apologies for poor(er) quality, work phone)
https://imgur.com/JVKX701 |
It's weird that all the gas is being vented forward but not backwards. That's the first time i've seen a gbbp do something like that.
Usually the gun vents the gas towards the back of the gun; near your hand etc, because it's venting all the gas to push the nozzle which moves the slide.
If the piston head is stuck in the nozzle it will prevent the slide from cycling like what you're seeing. You'll need to remove the slide and take out the recoil spring guide. Check that the nozzle moves freely otherwise if it is too stiff or gets caught, you will need to replace the piston head or lubricate it depending on its condition.
It's either that or the recoil spring is too strong because that is way too much gas being vented from the barrel.