Are you at least 18 years old?
Maximize the raw ballistic velocity, brush-busting momentum, and intermediate-range utility of the devastating .458 Socom cartridge from a standard, non-NFA legal rifle configuration. The P2A PATRIOT 18" 458 Socom Carbine-Length Melonite M-LOK Rifle is a fully assembled, factory function-tested complete firearm meticulously engineered to deliver exceptional precision and cycling reliability right out of the box. While shorter pistol layouts limit full propellant expansion, this 18-inch heavy contour 4150 CMV steel barrel extracts optimal muzzle velocities to establish exceptionally flat trajectories and massive downrange kinetic impact. Built with a modified upper receiver featuring a factory-widened ejection gate, this platform guarantees seamless extraction cycles of large-caliber brass. Bypassing building stress and big-bore component tolerance matching entirely, this turnkey modern sporting rifle arrives ready for duty or the hunting field. Proudly 100% designed, machined, and precision-assembled in the USA.
| Caliber Compatibility | 458 Socom |
|---|---|
| Barrel Length & Steel | 18 Inch Medium Profile, 4150 Chrome Moly Vanadium Steel, Melonite Treated |
| Twist Rate | 1:14 Twist (Optimized twist for 458 Socom Caliber) |
| Upper Receiver | Milspec Forged 7075-T6 Aluminum, Enlarged Ejection Port, Single Large Feed Ramp, 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 | Carbine-Length Gas System, Low-Profile Gas Block Machined from 4140 Steel, Stainless Steel Gas Tube |
| Muzzle Device | Standard 5/8-24 Thread Pitch, A2 Big Bore 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 Carrier, 9310 Bolt, 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 | Milspec Adjustable M4 Stock, 6 Position Carbine Buffer Tube (Receiver Extension),3oz Standard Recoil Buffer, and Buffer Spring Assembly |
| Magazine | (1) 458 Socom AR-15 Compatible Magazine |
| Manufacturing Origin | 100% Made in the USA with Pro2A Tactical Lifetime Factory Warranty |
The P2A PATRIOT 18" 458 Socom M-LOK Rifle directly resolves the most severe mechanical hurdles associated with custom big-bore builds: clearing case geometry and preventing severe tolerance stacking. Large thumper cartridges like the .458 Socom operate under intensive initial pressure spikes and use wide casings that will easily jam standard, unmodified AR-15 ejection gates. Sourcing separate carrier heads, barrels, and receivers from disparate e-commerce brands frequently results in failure-to-extract jams, dangerous headspacing variations, or single-shot manual feed failures. Pro2A Tactical permanently eliminates these headaches by hand-fitting, headspacing, and precision testing the entire operating platform together as a single cohesive unit before it ever encounters your transfer dealer.
Furthermore, selecting a full-length 18-inch barrel configuration leverages the absolute functional peak of the .458 Socom round from a rifle framework. It provides unmatched recoil management, complete powder burn windows, and increased muzzle velocity while ensuring full compliance with non-NFA rifle standards. Built to endure punishing energy forces with forged aluminum receiver walls and a chemically hardened core, 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 big-bore 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-458AX15CAR18-1.14-TK |
|---|---|
| Model | PATRIOT |
| Barrel Length | 18 inch |
| Rifle Caliber | 458 Socom |
| Manufacturer | Pro2A Tactical |