G&P Polyamide Explosive Bearing Piston Head for Airsoft AEG

"Great air seal and very reasonably priced, kind of heavy compared to non-bearing piston heads, but much lighter then aluminum. The larger holes for inflating the O-ring, I think, make a much better design. Especially if you get gunk in it and have to clean it out.

Mine wasn't blue, so don't freak out if it was another color.

"this piston is very durable since its polycarb. it has a superb airseal and increased my fps

"Had a couple of these for years. Great compression, but they're white. I recently found out that there are cracks running through them, even with a sorbo pad installed. Don't get me wrong, they're great piston heads I've been using them for YEARS, but if you never want to open your gun up again I'd look for something else.

"Good Piston Head, comes with bearings. Also white, not like blue pictured.

"This product is not as good as it looks, for me it wasn't, i was expecting a thick piston head with a thin o-ring, but it was the other way, the first 500 rounds that i used my gun with this piston head, it crashed into pieces so i got to put back the stock piston head.

Maybe my mistake was the M120 spring in my gun, but next time i'm going to buy aluminum parts.