For: Lonex Extreme Toughness Polycarbonate Piston w/ Ten Metal TeethProduct Information:
I got this in my asgi fmg4 and when I opened it I found it to already have the AOE corrected so I didn't have to do that. So far I have no wear and it works REALLY good and would recommend this to anyone.
AOE corrected right out of the package
mostly metal teeth
none that I can think of at the moment