||I Have bought about 4 of these pistons so far and none have failed on me so far. I recommend this piston for any gun you buy!! It can withstand over 35 rounds per second without wear-n-tear. Right now my M4 is shooting 380FPS (Constant over a year) with 33 rounds per second. This is a must buy anad should be one of your first upgrades that you put into your gearbox!!
Fast and Smooth
Can withstand LOTS of pressure (Speed and torque)
One of the cheapest pistons on the market!!
G&P has outstanding performance, keep it up!
Rating: [5 of 5 Stars!]