This is fairly nice product, light and durable feeling. I needed a replacement piston for my JG G36c due to it stripping out. This piston increased my ROF by almost 3 bbs a second which was pretty nice. I put this new piston in and in under 2k shots the piece of plastic holding the metal tooth in place broke off. Therefor the piston couldn't get pulled back anymore and pieces of plastic got all through my gearbox. Now i have to buy a new piston and drop it in.
The piston doesnt have many pros
Increases ROF a touch.
I feel the cons out weigh the pros for this piston.
Not very Durable.
Broke in less than 2000 shots.