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Step up to an intermediate defensive and long-range precision powerhouse engineered to dramatically outpace traditional sub-caliber limits without upgrading to a heavy, oversized AR-10 platform. The P2A PATRIOT 16" 6mm ARC Mid-Length Melonite M-LOK Rifle is a fully assembled, factory function-tested complete firearm built to deliver maximum downrange terminal velocity and structural reliability right out of the box. While standard intermediate platforms frequently compromise kinetic impact and wind-drift coefficients at extended ranges, this model pairs a precision 16-inch 4150 CMV steel barrel with the highly optimized chamber dynamics of the 6mm ARC (Advanced Rifle Cartridge). Originally engineered to bridge the performance gap between standard small-bore options and heavy battle rifle calibers, this round achieves maximum powder efficiency and ultra-high ballistic coefficient indexing, providing substantial energy footprint expansion, superior barrier penetration, and flat trajectory paths. This hard-hitting long-range core is counterbalanced by a true mid-length gas operating system. By extending internal gas pressure dwell time, this profile expands component cycle timing, resulting in an exceptionally smooth recoil pulse, cleaner case extraction, and significantly minimized muzzle flip. Featuring a lightweight free-float M-LOK rail and robust lower parts execution, this turnkey AR rifle completely eliminates building stress. Proudly 100% designed, machined, and precision-assembled in the USA with a Pro2A Tactical Lifetime Factory Warranty.
| Caliber Compatibility | 6mm ARC (Advanced Rifle Cartridge) |
|---|---|
| Barrel Length & Steel | 16 Inch Medium Profile, 4150 Chrome Moly Vanadium Steel, Melonite Treated |
| Twist Rate | 1:7.5 Twist (Optimized to stabilize standard and match-grade heavy low-drag 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 | Mid-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 | 12" 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, Type 2 Bolt face optimized for 6mm ARC, Nitride Treated, Properly Staked Gas Key, MPI Tested |
| 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) 6mm ARC AR-15 Compatible Magazine |
| Manufacturing Origin | 100% Made in the USA with Pro2A Tactical Lifetime Factory Warranty |
The P2A PATRIOT 16" 6mm ARC M-LOK Rifle directly solves the most common technical issues encountered with standard custom rifle builds: violent cycling, sub-optimal pressure regulation, and part-by-part tolerance stacking. When constructing specialized intermediate-bore platforms from mismatched manufacturers, builders frequently fight extraction failures or gas timing headaches due to inconsistent port diameters. Pro2A Tactical completely eliminates these engineering frustrations by headspacing, aligning, and function-testing the entire operating block as a single unit, ensuring that the bolt, barrel extension, gas port, and buffer system interface flawlessly right out of the box.
Furthermore, choosing a 16-inch barrel optimized for the 6mm ARC cartridge strikes the ultimate operational sweet spot for downrange energy and intermediate-range portability. Originally engineered to improve upon the long-range limitations of standard smaller calibers without moving to a heavy AR-10 frame, the 6mm ARC delivers devastating kinetic impact and enhanced wind resistance. Paired here with a smooth mid-length gas operating system, this setup broadens the internal gas pressure dwell time. This tames system cycling speed, smooths out case extraction, and drastically minimizes felt muzzle flip, ensuring faster follow-up shots whether you are on the clock or tracking a target in the field.
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 patriot deserves it.
| SKU | P2APAT-6ARCACT12MID16-1.75-M-TK |
|---|---|
| Model | PATRIOT |
| Barrel Length | 16 inch |
| Rifle Caliber | 6mm ARC |
| Manufacturer | Pro2A Tactical |
