Cmmg rdb applications - POF USA AR-15 Roller Cam Pin Assembly

In case you haven't noticed, your CMMG radial delayed blowback BCG used a cam pin with a round head. Just like this one. Noticing this when I first received my RDB bolt & barrel set, I immediately placed an order for one of these roller cam pins. My goal is to eventually run this thing supressed, so while building it I chose every part I could think of that might smooth out and quiet down the action as much as possible. I used this, a Geissele super 42 braided buffer spring, Kynshot RB5005 hydraulic buffer inside a PWS enhanced anti-tilt buffer tube. This is the smoothest cycling action of any AR I've ever laid my hands on. I can't say it's all due to the roller cam pin but a bearing rolling along the inside of the upper opposed to a pin just dragging along the inside of the upper would lead me to believe it's smoother cycling. I never used the stock cam pin, so I can't say. It's been in my grip from the start, just in case it ever fails. Close to 5,000 rounds through it and the roller is just as tight as the day I installed it. Nevertheless, I keep the stock cam pin in the grip for a backup.