CMMG ENDEAVOR — 22 ARC, 20" Barrel, Cerakote Coyote Tan (Model 28B3D0CCT)
Brand: CMMG • Series: ENDEAVOR • Caliber: 22 ARC (Advanced Rifle Cartridge) • Barrel Length: 20 inches • Finish: Coyote Tan Cerakote® (receiver/handguard)* • Platform: AR-15 precision rifle • Intended Role: Varmint/predator, practical precision, long-range training • Model/SKU: 28B3D0CCT • UPC: 810148627416
Meet the flat-shooting, low-recoil AR that punches above its weight: the CMMG ENDEAVOR 22 ARC with a 20" barrel in Coyote Tan Cerakote. Optimized for heavy .224 bullets and long, efficient ogives, 22 ARC delivers outstanding wind performance and retained energy—while staying in the lightweight, accessory-rich AR-15 footprint. The ENDEAVOR build adds a free-float handguard, precision barrel, and match-friendly ergonomics so you can stretch distance on coyotes, prairie dogs, and steel with confidence.
*Color/finish conventions vary by run; this model’s “CCT” designation denotes a tan Cerakote finish.
Why Choose 22 ARC in the ENDEAVOR Platform
Long-range .224 ballistics: Designed around heavy 75–88+ grain bullets, 22 ARC provides flatter trajectories and less wind drift than legacy .223 loads—without big-frame recoil.
AR-15 handling, big results: Keep familiar controls, lighter weight, and broad parts compatibility while reaching distances you’d expect from larger cartridges.
Proven feed system: Uses a Grendel/ARC-style bolt face and runs best in 6.5 Grendel-pattern magazines for reliable cycling with long COAL bullets.
20" velocity sweet spot: The extended tube boosts MV and consistency, making dope collection and hit percentage easier at range.
Key Features & Specs
Caliber: 22 ARC (.224" bore; optimized for high-BC projectiles)
Barrel: 20" precision barrel, threaded muzzle (device may vary by package)
Twist Rate: Optimized for heavy bullets (commonly fast twist)*
Gas System: AR-15 DI-style operation with standard controls
Handguard: Free-float M-LOK® rail—rigid accessory mounting, no contact on the barrel
Receivers/Furniture: AR-15 pattern with ENDEAVOR-series ergonomics (adjustable stock/grip style may vary)
Muzzle: Suppressor-ready threads for brakes/compensators/cans*
Magazine Interface: 6.5 Grendel-pattern mags recommended
Finish: Coyote Tan Cerakote® for enhanced corrosion/abrasion resistance
Model/SKU: 28B3D0CCT • UPC: 810148627416
*Verify specific twist rate, thread pitch, and included muzzle device in your rifle’s package details.
What Sets the ENDEAVOR Apart
Free-float accuracy: The handguard isolates support pressure from the barrel for consistent POI off bags, bipods, and barricades.
Purposeful ergonomics: Extended sight radius, adjustable stock, and ambi-friendly controls help you run the rifle efficiently from prone to tripod.
Optics-ready real estate: Continuous top rail for LPVOs or mid/high-magnification scopes, with room for clip-ons and offset red dots.
Cerakote durability: Coyote Tan finish is tough, weather-resistant, and blends naturally in open country.
Ideal Use Cases
Predator & Varmint: High-BC .224 bullets anchor coyotes and stretch small targets with precision and low recoil.
Practical Precision Training: Practice wind calls/position changes on a gas gun that tracks like your match rifle.
Ranch & Field: Lighter than big-frame ARs, with the reach to manage pests across fencelines and pastures.
Suppressor-Friendly: Tame blast and spot impacts more easily with compatible .22-cal cans (confirm rating and thread).
Setup Tips for Best Results
Magazines: Choose quality 6.5 Grendel-pattern mags—they feed 22 ARC’s case geometry and long OAL bullets more reliably.
Glass: A 2-12x, 3-15x, or 4-16x FFP scope with a usable wind tree and dependable tracking pairs perfectly.
Support Gear: Add an ARCA plate to your handguard for tripod work; run a cant-adjustable bipod for prone.
Ammo Selection: Test several 75–88+ gr loads; 22 ARC shines with heavy bullets for BC and wind deflection.
Gas/Buffer Tuning: If you switch to a suppressor or different muzzle device, fine-tune gas and buffers for smooth ejection and minimal dot movement.
Maintenance & Ownership
Break-in & Clean: Follow CMMG’s guidance; keep the gas system and chamber clean for consistent groups.
Fastener Discipline: Verify torque on optic mounts and M-LOK hardware; add blue threadlocker where appropriate.
Data Tracking: Record MV, DA, and wind with each lot; 22 ARC responds well to clean dope across seasons.
SEO Highlights (Copy & Paste)
CMMG ENDEAVOR 22 ARC 20" Coyote Tan precision AR-15 rifle
Long-range .224 performance with heavy, high-BC bullets and low recoil
Free-float M-LOK handguard, suppressor-ready threaded muzzle
Runs best with 6.5 Grendel-pattern magazines for reliable feeding
Model 28B3D0CCT • UPC 810148627416 — Cerakote Coyote Tan
Frequently Asked Questions
Q: What mags should I run?
A: 6.5 Grendel-pattern AR-15 magazines deliver the most reliable feeding with 22 ARC case geometry and long projectiles.
Q: Ideal bullet weights?
A: The cartridge is purpose-built for 75–88+ grain .224 bullets, offering superior BC and wind resistance.
Q: Is a 20" barrel long enough for distance?
A: Absolutely. The 20" length balances velocity and handling, providing excellent long-range performance without excessive weight.
Q: Can I suppress it?
A: Yes—confirm your barrel’s thread pitch and ensure your suppressor is rated for high-velocity .22-cal centerfire.
Q: Is this standard AR-15 compatible?
A: Controls and furniture are AR-15 standard; the bolt face and magazines follow the Grendel/ARC pattern to fit the 22 ARC case head/OAL.
Precision Without the Punishment
The CMMG ENDEAVOR 22 ARC 20" in Coyote Tan (28B3D0CCT, UPC 810148627416) blends long-range capability, soft recoil, and AR-15 familiarity in a rugged Cerakote package—perfect for predators, prairie dogs, and practical precision practice. Mount good glass, feed it high-BC bullets, and watch your hit percentage climb.
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