14.5″ FULL-AUTO P308

“…we decided to continue testing the rifle to complete failure. To date we have not been able to complete this task…”

-After Action Report from San Bernadino County Sheriff’s Department

Our technology works. Ask why, and you’ll quickly understand every enhancement on a POF rifle has a purpose, and it’s certainly not to appease the MILSPEC gods. Our goal is relentless reliability. Even after successful extensive testing like this we continue to improve on the Ultimate Fighting Machine. The P308 is your best bet for certainty in an uncertain world. While everyone else is simply saying their rifles are “proven”, we actually prove it. 

Relentless Reliability

“…did not experience any malfunctions until the rifle reached approximately 23,000 rounds. All extraction failures were due to part fatigue and not stuck cases.” – After Action Report

“No new part related malfunctions were recorded after approximately 35,900 rounds until the round count reached 66,900” – After Action Report

E-Squared Solves The Root Cause Of Extraction Issues

POF’s patented E2 dual-extraction technology consists of four small channels cut into the walls of the chamber allowing a small amount of gas pressure to push against the neck of the spent case. This pressure assists in extraction by breaking the seal between the chamber and case as well as pushing the spent case to the rear as the extractor is pulling to the rear. This removes a tremendous amount of work that would otherwise be left up to the extractor.

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POF Puritan Torture Test

The POF Solution

Our patented Roller Cam Pin is just one more example of how far we will go to reduce friction and drag. Standard AR cam pins feature a square (steel) head that grinds along the inside of the aluminum receiver. The image on the right shows the result of not using a roller cam pin.

Standard AR Cam Pin Damage

This is an example of significant wear on the upper receiver, to the point of needing to replace the part. Without a Roller Cam Pin reducing friction and drag, the standard AR cam pins grind along the inside of the aluminum receiver, eventually wearing them down to the point where the bolt will start clipping the barrel extension. Essentially out of position.

Complicating The Part & Process

Other manufacturer’s address the friction and drag problem by adding a steel insert to the receiver’s channel, as opposed to solving the actual friction and drag root cause. A steel rectangle will win against aluminum all day long, so other manufacturers added the steel insert to even the metallurgical  playing field. Another part, another spot for carbon and dirt to collect, another potential point of failure.

A Closer Look

Photos of the actual bolt, roller cam pin, and carrier of the torture tested P308. The lack of wear is evident, even after over 68,000 rounds of 308.

Easily Upgrade Your MILSPEC AR-15 Lower

This gas piston upper receiver assembly features the new 2014 M Rail. It will have the E2 Chamber Feature. It comes with two 5-slot and one 12-slot detachable rail section (not shown).  Purchase more rail-estate with additional rail sections (sold separately). POF upper receiver assemblies are made-to-order.

Gas Piston Complete Uppers

Browse Patriot Ordnance Factory's large selection of complete uppers

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