Philadelphia Area Airsoft

I bought this and for the life of me I can not remember WHERE I bought it from. Weapon Blender or Tiger Tactical Airsoft springs to mind, but I have not found it on their sites. Might have been somewhere else. Old Age Setting in I guess.

Any help appreciated it you have seen this type of piston before and where.

I have a piston like this in my M130 Matrix drop-in gearbox I got from Evike.(by the way...this gearbox SUCKS!)

I found out it is a SHS 14 Tooth Piston. I must have snagged it the last time I needed some internal parts!