What a difference - POF USA Complete P-415 Edge 16.5 in Barrel 5.56x45mm NATO Upper Receiver

I got tired of constantly cleaning the carbon out of my bcg. So I decided to try this piston system. POF were one of the pioneers in this realm so I gave them the nod and bought the 16.5 inch. I really am shocked at the difference. After 500 rounds, my bcg is like new. Hardly anything to clean. I just don't know what else to say. It's clean, accurate and has less recoil. I'm gonna give a shout out to the muzzle break for aiding in the recoil department, but still....why the heck have i been breathing gas all these years? For me, it's everything i dreamed of in a firearm. Never going back.