This is a quick review of the POF P415/P416 9" Upper. This is a 9 inch Short Barrel Riffle (SBR) Piston Upper for the AR 15 platform that is machine gun rated gas piston upper with POF's proprietary Modular Railed Receiver (MRR) and their free floating monolithic upper rail system.
This is a piston system as opposed to a gas impingement. The piston system helps dissipate the heat and minimizes the fouling and maintenance. I have several other POFís and as I have stated before, believe they are revolutionary in their piston design and in my opinion are one the most reliable ARís in the market. The piston system really minimized fouling at the bolt. This is especially important if you shoot suppressed.
Short, light, and ready for action. And let me tell you, this baby rocks!!! Once you go piston, you'll never go back to a gas impingement system again.
I mounted this upper on my P416 lower as an alternate SBR upper and absolutely fell in love with it! Coupled with my Gemtech G5 suppressor, it is a marriage made in SBR heaven. It performed flawlessly and accurately and is well worth the $200 SBR Tax Stamp.
The upper OAL is 16 1/2" and weighs 4.26 lbs. (empty), Installed on my P416 lower the OAL is 26" (w/the buttstock fully collapsed) and weighing in at 6.70 lbs. (empty).