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Unlock the absolute maximum ballistic velocity and extended precision potential of the intermediate platform. The P2A PATRIOT 20" 6.5 Grendel Rifle-Length Melonite M-LOK Rifle is a fully assembled, factory function-tested complete modern sporting rifle engineered to unleash the true long-range pedigree of the 6.5 Grendel cartridge. Built around a full 20-inch 4150 CMV steel barrel, this configuration maximizes powder expansion and burn time, providing exceptional muzzle velocity footprints that surpass shorter variants to guarantee flat trajectories past the 800-yard mark. It pairs this extended bore with a true rifle-length gas operating system, lowering internal carrier pressures to ensure an incredibly soft recoil impulse and clean follow-up tracking. Arriving completely assembled with premium matching receivers and pre-headspaced internal controls, this turnkey package deletes building stress entirely. Proudly 100% designed, machined, and precision-assembled in the USA.
| Caliber Compatibility | 6.5 Grendel (Type II / .136 Bolt Face Depth) |
|---|---|
| Barrel Length & Steel | 20 Inch Medium Profile, 4150 Chrome Moly Vanadium Steel, Melonite Treated |
| Twist Rate | 1:8 Twist (Optimized to stabilize standard and match grade hunting projectiles) |
| Upper Receiver | Milspec Forged 7075-T6 Aluminum, M4 Feed Ramps, Forward Assist & Dust Cover, Type III Hardcoat Anodized Black |
| Lower Receiver | Mil-Spec Forged 7075-T6 Aluminum, Type III Hardcoat Anodized Black Finish |
| Gas Operating Block | Rifle-Length Gas System, Low-Profile Gas Block Machined from 4140 Steel, Stainless Steel Gas Tube |
| Muzzle Device | Standard 5/8-24 Thread Pitch, A2 Flash Hider with Crush Washer Pre-Installed |
| Handguard Rail | 15" Slim Free-Float M-LOK Handguard, Machined from 6061-T6 Aluminum with Top Picatinny Rail |
| Bolt Carrier Group | Full Auto M16 Profile, Heavy Duty Correct Type II Profile Bolt Carrier Group, Nitride Treated, Properly Staked Gas Key |
| Charging Handle | Standard Milspec AR-15 Charging Handle |
| Lower Parts Kit | Complete Mil-Spec Lower Parts Kit (LPK) with Crisp Single-Stage Fire Control Group and Standard A2 Grip |
| Stock Assembly | 6-Position Adjustable Carbine M4 Stock with Mil-Spec Buffer Tube, Buffer Spring, and Buffer Weight Setup |
| Magazine | (1) 6.5 Grendel AR-15 Compatible Magazine |
| Manufacturing Origin | 100% Made in the USA with Pro2A Tactical Lifetime Factory Warranty |
The P2A PATRIOT 20" 6.5 Grendel Rifle Length Upper Kit directly eliminates the primary risk encountered when stepping into custom long-range calibers: component friction and parts mismatching. Alternative calibers like the 6.5 Grendel require exceptionally tight headspacing tolerances and exact bolt face depths to feed and extract heavy casings cleanly under high pressure. Sourcing separate receiver and bolt components from disparate e-commerce brands frequently results in loose receiver fitments or persistent failure-to-feed errors. Pro2A Tactical solves this problem completely by custom-matching, headspacing, and testing the entire operating group as a unified firearm package before it leaves the factory floor.
Furthermore, running a full 20-inch barrel configuration leverages the true long-range potential of the 6.5 Grendel round, enabling it to match the flat supersonic trajectories of heavy bolt-action rounds from a standard, lightweight semi-automatic platform. Built to withstand punishing field or match environments, the combination of forged 7075-T6 aluminum shells and a chemical Melonite-hardened core provides long-lasting field dependability. Backed completely by Pro2A Tactical's signature Lifetime Factory Warranty and engineered with 100% American craftsmanship, the PATRIOT rifle offers top-tier reliability 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-65GGFS15RIF20-1.8-M-TK |
|---|---|
| Model | PATRIOT |
| Barrel Length | 20 inch |
| Rifle Caliber | 6.5 Grendel |
| Manufacturer | Pro2A Tactical |
