AOLS Reinforced Piston with 14 Full Steel Teeth

Solid construction. No mods were required for my gun. Installed with confidence that it would solve my gear issues.I was pleased to see that it withstood rapid fire without issue.

Tough, perfect fit! Slight corrected for aoe! An awesome part

Well packaged and clean. Rack is definitely hard steel and was tightly packed into piston but not glued. As mentioned in a previous review, the rack stuck out a little bit and was not flush with the front end. I fixed this by removing tiny plastic bur in the rack guide that prevented it from sliding all the way back properly. I glued the rack, did minor swiss-cheesing to lighten, and filed down the 3rd tooth for AOE.Had about 600 rounds through it no issues so far, I'll update after I put it through it's paces.

The piston itself was nice. A problem that I ran into was that it was not machined properly. So, the metal slide stuck out in front of the plastic where the piston head should attach. I had to file this down in order to accommodate the piston head.I will also note that there was some weird rust like residue on the teeth when it first arrived. I was able to brush this off and it seemed fine. The first several thousand shots through my gun after installation have been fine.

Very good, put it in, works, what else does it need to do.(I upgraded from the stock G&G piston with plastic teeth)

Good product