Hi every-one (sorry for my bad english...I'll try to do my best for you)
So here it is, I bought a brand new G&G GR25 one year ago and spent about 400$ in upgrade into it (now shoot between 400-410fps). Important to know, this SR25 use a standard V2 gearbox with a longer nose and a longuer hop-up unit but use a standard AEG bucking.
With all of there, I come to upgrade the Hop-Up bucking, I firstly bought a prometheus hard bucking (red one) and the problem appear. When I shoot, the bbs jam into the hop-up (only one bbs) and I have to shoot about 20 times to let the bbs go out of the barrel. Then the second bbs jam

so I thought it was the bucking who has a mistake. I replace the G&G red-one on place and all camo good.
Last week I bought a Angel Custom 70deg. red hop-up. And it do exacly the same as describe with the prometheus...now I'm glad of all this, I just bought a kit to do an R-hop up (and I hope it will work perfecly) but I still having in mind to solve this problem pefore to be sure I'will not have other problem after the installation of the R-hop (like I know I have to modify a standard bucking into a flat fucking...I'will have to sacrifice the G&G one :S)
So please guys, help me