22 ARC Rifle: Perfect Match-Grade Precision AR15
This is an 18″ 22 ARC rifle from Chattahoochee Munitions. This will be one of the sturdiest feeling weapons as everything is designed to tight tolerances. All of our rifles are equipped with HIPERFIRE (High Performance Firearms) Triggers; all are 2.5lb single-stage, either Reflex (curved) or Competition (straight with shoe). The Competition model is pictured. Odin Adjustable Buffers and Superlative Arms Adjustable Gas Blocks are standard on our rifles.
CM15 Upper and Lower Receiver:
- Mil-spec dimensions to mate with any AR15 Components
- CNC machined from 7075-T6 billet aluminum
- Pictogram’ style Fire/Safe engravings on both sides
- Light-Weight FCG Faces and Mag-well
- Integral trigger guard for added overall strength
- Machined (not broached) Mag-well with wide flare
- Lightweight Lower Receiver Weight = 8.0 oz
- Cobalt Kinetics Green Cerakote
Lower Parts ( 22 ARC rifle):
- CM Ambi Safety
- CM Ambi Mag Release
- CM15 Pivot and Takedown Pins
- HIPERFIRE 2.5lb single stage Reflex (curved) or Competition (straight with shoe) Trigger and pins
- CM15 Ambi Bolt Release
- B5 Systems Coyote Grip
Receiver Extension:
B5 Systems Bravo Stock – Coyote
CM Milspec Buffer Tube – Cobalt Kinetics Green Cerakote
QD Endplate
Odin Adjustable Buffer AR15
Upper:
CM15 Low Mass Bolt Carrier Group:
- 9310 steel
- HPT Bolt (High Pressure Tested/ Proof)
- MPI Bolt (Magnetic Particle Inspected)
- Nitride-coated bolt
- Nitride-coated Carrier
- Nitride-coated Gas Key
- Gas Key Hardened to USGI Specifications
- Grade 8 Hardened Fasteners Key Staked Per Mil-Spec
- Tool Steel Extractor
- Lightening Cuts
CM15 Ambi Charging Handle – 7075 Aluminum
CM15 Dust Cover and Forward Assist
CM Rifle Length Gas Tube – Melonite
Superlative Arms .750 Adjustable Gas Block – DLC Coyote
CM15 LWS 15″ Mlok Handguard – Cobalt Kinetics Green Cerakote
- 6061 Aluminum
- Dual Taper Attachment System
- Steel Barrel Nut
- QD Attachment at 3 and 9 o’clock positions
- Mlok attachment on the sides and bottom
- Full Picatinny Top Rail
B5 Systems Coyote Rail Covers
Pictured with Dead Air Keymo Brake (suppressor host); however, can substitute with A2 Birdcage, Yankee Hill Brake, Silencerco ASR, Rugged 3 Port Brake
Reach out for a price adjustment on other muzzle devices if desired
Barrel: 22 ARC Rifle
CM15 22 ARC 18″ Fluted Barrel
- 416R Stainless
- Black Cerakote
- 1:7 Twist
- Shouldered crown
- 1/2×28 thread pitch
- .750 gas journal
- Rifle Length System
Magazine:
1x10rd DuraMag Coyote
OAL: 35.50-38.75″
OAW: 6lb/12oz with unloaded magazine and no accessories (Weight and dimensions on other tab are for shipping purposes)
LOP: 11″-14.25″
Warranty – Limited Lifetime
Limited to the original purchaser
Limited regarding functional performance
Limited regarding the original configuration
Take Long-Range Precision to the Absolute Edge with the CM15 22 ARC Rifle
When Hornady engineered the 22 ARC rifle (Advanced Rifle Cartridge), they set out to do something revolutionary: pack true, low-drag, long-range bolt-gun ballistics into a standard AR-15 footprint. But a groundbreaking cartridge is only as good as the platform launching it.
Enter the CM15 22 ARC Rifle by Chattahoochee Munitions.
Expertly machined from premium 7075-T6 billet aluminum and hand-fit to eliminate receiver rattle, this rifle maximizes the blistering velocities and high ballistic coefficients of the 22 ARC cartridge. Whether you are a dedicated varmint hunter squeezing every ounce of accuracy on long-distance predators, a competitive shooter tracking fast-moving targets, or a precision enthusiast, the CM15 22 arc rifle is designed to out-range, out-stabilize, and outperform standard 5.56 platforms across the board.
Premium Hardware Built for Match-Grade Accuracy
Every component chosen for the CM15 22 ARC Rifle balances violent speed with absolute recoil management. A rifle firing a cartridge capable of staying supersonic past 1,000 yards demands components that can keep pace.
1. Match-Grade 18″ Fluted Barrel
The heart of this long-range platform is its premium 416R stainless steel fluted barrel. Finished in a durable black Cerakote, the barrel features an aggressive 1:7 twist rate. This fast-twist rifling is crucial for handling the heavy, high-BC (ballistic coefficient) bullets that make the 22 ARC rifle legendary. The heavy fluting sheds weight, accelerates heat dissipation during long strings of fire, and adds rigidity to virtually eliminate barrel whip.
2. Tuned Gas and Recoil Systems
To give you flat, ultra-smooth target tracking, the CM15 comes standard with a Superlative Arms .750 Adjustable Gas Block featuring their patented Bleed-Off technology. Instead of choking the gas system, it vents excess gas forward away from the shooter, reducing backpressure and carbon buildup. Paired with a premium rifle-length gas system and an Odin Adjustable Buffer System, you can tune the gas and cyclic rate to match your specific ammunition or suppressor setup perfectly.
3. Crisp, Match-Grade Break
Every precision rifle requires an elite trigger. We outfit this rifle with HIPERFIRE (High Performance Firearms) triggers, offering a crisp, creep-free 2.5lb pull. You can customize your interface with our curved Reflex profile, a straight Competition blade with an adjustable shoe, or the crisp X2S Mod3 two-stage straight trigger.
Detailed Specifications: CM15 22 ARC Rifle
| Component | Technical Specification |
| Caliber | .22 Advanced Rifle Cartridge (22 ARC rifle) |
| Receiver Set | CNC Machined 7075-T6 Billet Aluminum (Cobalt Kinetics Green Cerakote) |
| Barrel Material | 416R Stainless Steel, Heavy Fluted, Black Cerakote |
| Barrel Length & Twist | 18 Inches | 1:7 Right-Hand Twist Rate |
| Gas System | Rifle-Length Tube | Superlative Arms .750 Adjustable Gas Block (DLC Coyote) |
| Bolt Carrier Group | CM15 Low Mass BCG | 9310 HPT/MPI Tested Bolt | Nitride Coated |
| Trigger Options | HIPERFIRE 2.5lb Single-Stage (Reflex or Competition) or X2S Mod3 Two-Stage |
| Handguard | CM15 LWS 15″ M-LOK (6061 Aluminum, Dual Taper Attachment System) |
| Furniture | B5 Systems Bravo Stock & Coyote Grip | B5 Coyote Rail Covers |
| Muzzle Thread | 1/2×28 TPI (Thread Pitch) | Multiple Suppressor-Ready Options Available |
| Overall Weight | 6 lbs, 12 oz (Unloaded without accessories) |
| Overall Length (OAL) | 35.50″ to 38.75″ (Adjustable stock extended) |
Why the 22 ARC Cartridge Changes Everything
For decades, shooting a high-performance .22-caliber cartridge past 600 yards meant switching to a heavy, long-action bolt rifle. The 22 ARC rifle rewrites those rules by using a modified case geometry optimized to fit within the standard lightweight AR-15 magazine and receiver footprint.
When fired from our match-grade 18″ barrel, heavy 62gr to 88gr bullets achieve velocities and flat trajectories that leave traditional 5.56 NATO/.223 Remington loads are far behind. The increased energy retention downrange means cleaner, ethical drops on varmints, predictable windage corrections, and bolt-action accuracy with the rapid-fire follow-ups only a semi-automatic platform can deliver.
Built to Suppress: Seamless Integration
If you plan to hunt or shoot suppressed, the CM15 22 arc rifle is the ideal host weapon. With its 1/2×28 threaded shoulder crown, it integrates seamlessly with industry-standard muzzle devices. Choose from premium, suppressor-ready options directly from the factory layout:
-
Dead Air Keymo Brake or Flash Hider
-
SilencerCo ASR Brake
-
Rugged 3-Port Brake
-
Yankee Hill Brake
Combined with the low-mass bolt carrier group (BCG) and the bleed-off adjustable gas block, this rifle eliminates gas blowback into your face, cycling quietly and cleanly when paired with an aftermarket suppressor.
The Chattahoochee Munitions Custom Advantage
At Chattahoochee Munitions, we don’t mass-produce assembly-line rifles. Every single CM15 22 ARC Rifle is precision hand-fit and built to tight tolerances at our custom manufacturing facility in Roswell, Georgia. We back our workmanship with a Limited Lifetime Warranty covering functional performance and structural integrity for the original purchaser.
Frequently Asked Questions (FAQ)
What makes the 22 ARC different from a standard .223/5.56?
While both shoot .224 diameter bullets, the 22 ARC rifle uses a larger case capacity and aggressive cartridge geometry derived from the 6.5 Grendel. This allows it to seat heavier, longer, high-BC bullets out farther without sacrificing powder volume. The result is significantly higher velocity, flatter trajectories, and far superior wind resistance at long distances than standard 5.56 NATO loads.
Can I use my standard 5.56 AR-15 magazines?
No. Because the 22 ARC case geometry uses a wider body diameter, it requires magazines designed specifically for 6.5 Grendel or 6mm ARC cartridges. Your rifle ships complete with a high-quality 10-round DuraMag in matching Coyote tan to ensure perfect, reliable feeding.
How do I properly adjust the gas block for a suppressor?
The included Superlative Arms Adjustable Gas Block uses a simple front-facing adjustment screw. It features restriction clicks and bleed-off clicks. To tune for a suppressor, start fully closed and back the screw out click-by-click until the rifle reliably locks back on an empty magazine, then add 1-2 clicks for a perfect reliability buffer.
What is the advantage of a low-mass bolt carrier group (BCG)?
A low-mass BCG reduces the overall moving weight inside the receiver during cycling. When paired with an adjustable gas block and tuned buffer system, it significantly decreases the felt recoil impulse and muzzle dip, allowing you to track your bullet’s impact directly through your high-magnification optic.
What ammo is best for an 18″ 1:7 twist barrel?
The fast 1:7 twist rate is optimized to stabilize heavier projectile profiles, specifically ranging from 75-grain to 88-grain match and hunting loads. Hornady’s factory match and ELD-X lines perform exceptionally well in this specific barrel configuration.
Jeffrey Turner (verified owner) –