POF Gen 4 Rifle 308 20″ Fluted Barrel NP3 Coated

Description

You know that feeling when you shoulder a rifle and it just fits? The balance is perfect, the controls are right where your fingers fall, and you can tell the engineering is a step above. That’s the experience I had with the POF Gen 4 Rifle 308 20 Deep Fluted Barrel11.5 Modular Rail 308 Win NP3. I’ve put a few hundred rounds of various .308 loads through one, and it’s clear this isn’t just another AR-10. It’s a purpose-built, over-engineered workhorse designed to run hard and stay clean.

So, what is the POF Gen 4 Rifle 308 20 Deep Fluted Barrel11.5 Modular Rail 308 Win NP3? It’s a direct-impingement piston (D.I.P.) .308 Winchester/7.62 NATO rifle featuring a 20-inch, deep-fluted, stainless steel barrel, an 11.5-inch modular handguard, and POF’s proprietary NP3 nickel-Teflon coating on internal and external components for extreme lubricity and corrosion resistance. This combination delivers a robust, accurate, and incredibly easy-to-maintain platform right out of the box.

Let’s start with the heart of the system: that 20-inch barrel. The deep fluting isn’t just for looks—it shaves significant weight and increases surface area for better heat dissipation. This means you can run longer strings without the point of impact walking as much, and the overall heft of the rifle is kept in check. We’re talking about a rifle that, despite its full-power cartridge and 20-inch tube, handles with a balance that belies its capability. The barrel is also cold hammer-forged and features a 5R rifling profile, which I’ve found contributes to both accuracy and easier cleaning. The muzzle is threaded 5/8×24, ready for your preferred brake or suppressor.

The 11.5-inch modular rail is a dream. It’s slim, offers a continuous top Picatinny rail, and provides ample real estate for lights, lasers, and grips without being overly bulky. It attaches via a solid, anti-rotation system directly to the upper receiver, ensuring zero shift. The rail is also compatible with a wide range of aftermarket accessories designed for the M-LOK system. Underneath it, you have POF’s unique D.I.P. gas system. Here’s the thing—it uses a short-stroke piston’s operating rod to tap gas, but it uses that force to push a proprietary cam pin that then cycles a modified direct-impingement bolt carrier. The result is a cleaner-running rifle than a standard DI gun, with less gas and carbon fouling blown back into the receiver. It’s a clever hybrid that works.

Then there’s the NP3. This isn’t a simple coating; it’s an electroless nickel plating infused with Teflon. Every critical surface—the bolt carrier group, trigger, hammer, disconnector, even the takedown pins—gets this treatment. The feel is slick, almost self-lubricating. In my time with it, carbon wiped off with minimal effort, and function was flawless. It’s a feature that truly defines the low-maintenance character of this Gen 4. The rifle ships with a 20-round Magpul PMAG, a proven and reliable choice, and the total package comes in at a price point of $2213.31.

POF Gen 4 Rifle 308 Specifications

Specification	Detail
Caliber	.308 Winchester / 7.62x51mm NATO
Barrel	20″ Stainless Steel, Deep Fluted, 5R Rifling
Handguard	11.5″ Modular M-LOK Rail
Finish/Coating	NP3 Nickel-Teflon on Internals/Externals
Operating System	Direct-Impigement Piston (D.I.P.)
Magazine	Magpul PMAG 20 LR/SR GEN M3 (Included)

Pros & Cons
The pros are substantial. The NP3 coating is a game-saver for maintenance. The accuracy potential from the quality barrel and solid lockup is excellent. The hybrid piston system keeps it cleaner and cooler than a standard AR-10. The fit and finish are top-tier, and it’s mil-spec compatible where it counts, meaning many standard AR-10 parts and accessories will work. That said, the cons are mostly about commitment. It’s a premium rifle with a price to match. At around 9.5 pounds unloaded, it’s not a lightweight mountain rifle, though the fluting helps. Some purists might debate the hybrid gas system, but my experience was all positive.

Who is this for?
This rifle is for the shooter who demands reliability and low maintenance from a .308 platform, whether for duty, competition, or serious range use. It’s for someone who doesn’t want to tinker or upgrade out of the gate—it fits out of the box. It’s also ideal for hunters in open terrain where the 20-inch barrel can leverage the full velocity of the .308 round. If you appreciate innovative engineering that solves real problems like fouling and corrosion, this is your rifle. It is available at firearms-missouri.com for Missouri residents and nationwide, with an FFL transfer required for firearm purchases.

Frequently Asked Questions

Q: Is the NP3 coating durable, or will it wear off?

A: NP3 is exceptionally durable. It’s a bonded electroless nickel plating, not a paint or spray-on coating. It’s highly resistant to wear, corrosion, and solvents. You’ll see wear on high-contact points like the bolt lugs over thousands of rounds, but it won’t flake or peel, and the lubricity remains.

Q: Can I use standard AR-10/SR-25 pattern magazines?

A: Yes. The lower receiver is designed for the widely accepted DPMS/SR-25 pattern magazines. The included Magpul PMAG 20 LR/SR GEN M3 is a great example, and most other brands like Lancer L7AWM or KAC magazines will function perfectly.

Q: How does the D.I.P. system affect reliability with different ammo?

A: The D.I.P. system includes an adjustable gas block (tool-less on later models). This allows you to tune the rifle to run reliably with everything from light commercial .308 loads to full-pressure 7.62 NATO, and especially to reduce gas flow when using a suppressor.

If a robust, innovative, and supremely easy-to-maintain .308 battle rifle sounds like the missing piece in your collection, this POF Gen 4 deserves a close look. See the full details on our site.