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Squeeze maximum long-range velocity, kinetic payload, and target precision potential out of a large-frame semi-automatic tactical platform. The P2A PATRIOT 20" 308 Win Rifle-Length Melonite M-LOK Rifle is a fully assembled, factory function-tested complete AR-10 modern sporting rifle engineered to unleash the ultimate downrange pedigree of the classic .308 Winchester caliber. Built around a full-length 20-inch 4150 CMV steel barrel, this configuration maximizes complete powder combustion inside the bore to deliver enhanced muzzle velocities and flatter trajectories that remain incredibly stable past the 800-yard threshold. It pairs this extended barrel profile with a true rifle-length gas operating system, lowering internal port pressure lines to ensure an exceptionally soft recoil impulse, smooth casing extraction, and minimized component wear. Arriving completely assembled with matching heavy-duty forged receivers and pre-headspaced internal controls, this turnkey package removes large-frame assembly complications entirely. Proudly 100% designed, machined, and precision-assembled in the USA.
| Caliber Compatibility | .308 Winchester (Fully compatible with 7.62x51mm NATO ammunition) |
|---|---|
| Platform Pattern | DPMS Gen 1 Pattern (High Profile Rail Configuration) |
| Barrel Length & Steel | 20 Inch Profile, 4150 Chrome Moly Vanadium Steel, Heavy Contour, Melonite Treated |
| Gas Operating Block | Rifle Length Direct Impingement, Low-Profile Steel Gas Block, Stainless Steel Gas Tube |
| Twist Rate | 1:10 Twist (Optimized to stabilize standard tactical loads and heavy match/hunting bullets) |
| Upper Receiver | Billet 7075-T6 Aluminum, DPMS Gen 1 Spec, Forward Assist & Ejection Port Cover Installed, Anodized Black |
| Lower Receiver | Billet 7075-T6 Aluminum, DPMS Pattern, Integrated Trigger Guard Architecture, Anodized Black |
| Handguard | 15-Inch Free Float Slim Profile Aluminum M-LOK Handguard Rail with Picatinny Top Rail |
| Bolt Carrier Group | Full Auto AR-10 Profile, Heavy Duty Carrier, 9310 Bolt, Nitride Treated, Properly Staked Gas Key |
| Charging Handle | Standard Milspec AR-10 Charging Handle |
| Muzzle Device | 5/8-24 TPI, Competition Muzzle Brake |
| Lower Parts Kit | Complete Mil-Spec Lower Parts Kit (LPK) with Crisp Single-Stage Fire Control Group and Standard A2 Grip |
| Stock Assembly | Milspec Adjustable M4 Stock, 6 Position Carbine Buffer Tube (Receiver Extension), Short 3.8oz AR-10 Recoil Buffer, and Extra Power Buffer Spring Assembly |
| Magazine | (1) PMAG or Compatible AR-10 Compatible Magazine |
| Manufacturing Origin | 100% Made in the USA with Pro2A Tactical Lifetime Factory Warranty |
The P2A PATRIOT 20" 308 Win M-LOK Rifle directly resolves the most common and frustrating obstacle faced by large-frame builders: the technical nightmare of AR-10 platform parts compatibility. Unlike the standardized AR-15 layout, AR-10 receivers, bolt geometries, and barrel extensions use differing proprietary standards (such as DPMS vs. Armalite pattern boundaries). Sourcing separate parts from different e-commerce brands frequently results in loose receiver fitments, failure-to-feed errors, or dangerous headspacing tolerance stacking. Pro2A Tactical eliminates these technical hurdles by precision-machining, matching, and testing the entire operating platform as a complete, unified unit before it ever leaves the factory floor.
Furthermore, selecting a full 20-inch barrel configuration paired with a true rifle-length gas system strikes the absolute ideal operational balance for a semi-automatic .308 platform. It achieves near-complete powder burn inside the bore to unlock optimal muzzle velocity metrics while completely skipping the violent, over-gassed cycling common to shorter carbine gas ports. Built to endure harsh environments with a chemical Melonite core and durable forged aluminum receiver walls, this tactical asset guarantees long-lasting dependability. Backed completely by Pro2A Tactical's signature Lifetime Factory Warranty and engineered with 100% American craftsmanship, the PATRIOT battle rifle offers top-tier accuracy and field readiness with total building confidence.
Partnering with some of the best manufacturers in the industry, we bring you a line of rifles and pistols with unrivaled quality for the cost, the “Patriot”. Every Patriot firearm is carefully built and assembled by our team of experienced armorers who knows the importance of reliability and repeatability. Every component is manufactured to milspec or better standards to ensure a high quality firearm is produced. Whether it is for sporting, hunting, or recreational needs, our Patriot Line of rifles and pistols is more than capable to live up to the task. The Patriot line combines quality with affordability because every enthusiast deserves it.
| SKU | P2APAT-308WAX15RIF20M-M-BA |
|---|---|
| Model | PATRIOT |
| Barrel Length | 20 inch |
| Rifle Caliber | 308 Win |
| Manufacturer | Pro2A Tactical |
