WE-Tech Complete NG3 Inner Barrel and Hopup Unit for WE M92 Airsoft GBB Pistols

"absolutely amazing accuracy, can out shoot the longer barrel. i run a HPA tapped full auto barry burton with the 50 rnd mags and hi flow valves at slightly higher pressuere than propane and i can out shoot most stock m4s, and a few snipers on the feild i play at. no downside to them, because they can be used at close range. since i use hpa, i have never had to worry about freezing the bucking. over all 10/10

"Very good hop up system, only thing is for it to fit in my KJW M9 barrel I had to sand the outside of the hop-up unit a little bit, and for the gun to cycle properly had to sand down a couple parts on the sides (the little metal wing pieces that guide it in the gun) but other than that its great