Description
Picture this: you’re on a long-range course, the wind is a factor, and the target is a small steel plate at 800 yards. You need a rifle that’s more than just an AR-10—you need a purpose-built system that balances precision, manageability, and modern ergonomics. That’s the exact scenario the Adams Arms P2 6.5 Creedmoor, 18″ Heavy Contour Barrel, M-Lok, Black, 20rd is engineered to dominate. It’s a gas-operated, semi-automatic precision rifle built on a robust AR-10 platform, designed to deliver consistent, long-range accuracy with the modularity and speed of a modern sporting rifle. With its 18-inch heavy barrel chambered in the flat-shooting 6.5 Creedmoor and a 20-round magazine capacity, it bridges the gap between a benchrest gun and a dynamic field rifle.
So, what makes this rifle stand out in a crowded field? Let’s start with the heart of the system: the 18-inch, heavy-contour barrel in 6.5 Creedmoor. This isn’t a lightweight pencil barrel; the added mass reduces harmonic vibration for better shot-to-shot consistency and helps manage heat during extended strings of fire. The 6.5 Creedmoor cartridge itself is the key, offering a superior ballistic coefficient and less wind drift than the .308 Winchester, making those 600+ yard shots more achievable. The rifle’s overall length, with the 18-inch barrel, strikes a practical balance between velocity and maneuverability, coming in at a estimated 36-38 inches overall.
The platform is built for customization. The full-length M-Lok handguard provides a rigid, lightweight interface for mounting bipods, lights, sling mounts, or forward grips exactly where you need them. Here’s the thing—this system is designed for compatibility. It uses a standard DPMS-pattern AR-10 platform, meaning a vast ecosystem of aftermarket triggers, grips, stocks, and accessories from brands like Magpul, Geissele, and Radian Weapons will fit out of the box with no gunsmithing required. The included 20-round magazine gets you in the fight and is compatible with other SR-25/DPMS pattern mags.
Weighing in at an estimated 9.5 to 10.5 pounds unloaded, the P2 has a solid, stable feel without being cumbersome. That weight, combined with the efficient Adams Arms piston operating system (if so equipped, based on the P2 model line), can contribute to a softer felt recoil impulse than a direct-impingement gun, helping you stay on target for faster follow-up shots. The investment for this capability is $1802.25, positioning it as a serious tool for the dedicated shooter.
| Caliber | 6.5 Creedmoor |
| Barrel Length | 18″ Heavy Contour |
| Operating System | Gas-operated (Piston system typical for P2) |
| Handguard | M-Lok |
| Magazine Capacity | 20 Rounds (Included) |
| Finish | Black |
Pros: The 6.5 Creedmoor chambering offers excellent long-range ballistics. The heavy barrel promotes accuracy and heat management. The M-Lok handguard allows for limitless accessory configuration. The AR-10 platform guarantees extensive aftermarket support. The piston system can run cleaner and cooler.
Cons: The weight can be a factor for all-day carry in the field. Ammunition cost is higher than .223/5.56. The overall length may feel less handy in tight quarters compared to a shorter rifle.
This rifle is for the shooter who has graduated from plinking and wants a semi-automatic platform capable of genuine precision work. It’s for the hunter pursuing game across wide-open western plains or the competitive shooter in practical precision rifle matches. It’s also for the prepared citizen who values the capability to engage accurately at extended distances. This is available at firearms-missouri.com for Missouri residents and nationwide.
Frequently Asked Questions
Q: Is this a direct-impingement or piston-driven rifle?
A: The Adams Arms P2 line is typically built around their proprietary piston operating system. This design reduces carbon fouling in the receiver and can offer more consistent performance in adverse conditions compared to a standard direct-impingement AR-10.
Q: Can I use my existing .308 Winchester/7.62×51 magazines with this 6.5 Creedmoor?
A: Yes, in most cases. The 6.5 Creedmoor is designed to run in standard DPMS-pattern .308 magazines. The included 20-round magazine and most aftermarket .308 mags from reputable brands will function reliably with the 6.5 Creedmoor cartridge.
Q: What type of optic should I put on this rifle?
A: To fully utilize the 6.5 Creedmoor’s potential, a variable-power scope with magnification up to 15x or more is recommended. Look for a First Focal Plane (FFP) optic from brands like Vortex, Primary Arms, or Nightforce if you plan on using holdovers at varying magnifications for long-range shooting.
Ready to build your long-range system? See the full details and availability on our product page. FFL transfer required for firearm purchases.
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