Quote:
Originally Posted by Amos
That looks to be a CA Yellow piston (Hard to confirm because of the photo colours)
If it is.. throw it out. CA Yellow pistons are awful.
Replace it with a stock tokyo marui, Prometheus or System supercore  |
+1 on that, CA pistons just suck in general..
throw in a new (modify quantum/pick your poison) piston and it'll be singing.
just be sure to CLEAN ANY PLASTIC SHAVINGS out from the gearbox nooks and crannies, otherwise you could end up with stripped gears in future.