Description
Picture this: you’re on a long-range course, the wind is a constant variable, and your target is a small silhouette at 800 yards. You need a rifle that doesn’t just reach out—it connects with authority and repeatable precision. That’s the mission of the CMMG Endeavor 300 MK3 6.5 Creedmoor 24″ Barrel, Magpul PRS Black Stock Black Hardcoat Anodized, 20rd. It’s a purpose-built, long-range AR-10 platform chambered in the flat-shooting 6.5 Creedmoor cartridge, designed for precision shooters who demand consistency from a semi-automatic platform. With its 24-inch heavy-contour barrel and fully adjustable Magpul PRS stock, this rifle is engineered to turn challenging shots into confident impacts.
The heart of any precision rifle is its barrel, and CMMG didn’t cut corners. The 24-inch, button-rifled, 416 stainless steel barrel provides the optimal length for the 6.5 Creedmoor to achieve maximum muzzle velocity and ballistic efficiency. That extra barrel length gives the powder more time to burn, pushing those high-BC projectiles at speeds that flatten trajectories and extend your effective range significantly. The heavy contour reduces harmonic vibration and manages heat, which is critical for maintaining point of impact during strings of fire. At a total weight of approximately 11.5 lbs unloaded, it’s built for stability on the bench or bipod, not for hiking miles of backcountry.
Control and fit are paramount for precision, and the Magpul PRS Gen3 stock is a cornerstone of this build. It offers micrometer-adjustable cheek riser and length of pull, allowing you to lock in a perfect, repeatable weld every time you shoulder the rifle. This isn’t a guessing game—it’s a system. The hardcoat anodized upper and lower receivers provide a durable, wear-resistant foundation. Here’s the thing—this rifle is built on the AR-10 pattern, meaning it’s compatible with a wide range of aftermarket DPMS-pattern parts and accessories if you want to personalize your setup further.
Specifications
| Caliber | 6.5 Creedmoor |
| Barrel | 24″, 416 Stainless Steel, 1:8 Twist |
| Overall Length | Approx. 44.5″ (Stock Extended) |
| Weight | Approx. 11.5 lbs |
| Stock | Magpul PRS Gen3 |
| Magazine | 20-round PMAG® LR/SR GEN M3 |
Pros: Exceptional long-range accuracy potential from a semi-auto platform. The 24″ barrel maximizes 6.5 Creedmoor ballistics. The fully adjustable Magpul PRS stock allows for a custom fit. High-quality, durable construction throughout. Ships with a reliable 20-round Magpul magazine.
Cons: The rifle’s weight and length make it less maneuverable for dynamic shooting. The premium features come at a premium price point of $2247.25. It’s a specialized tool best suited for supported firing positions.
Who is this for? This rifle is for the disciplined long-range shooter, the PRS competitor looking for a gas-gun division edge, or the hunter who takes ethical shots at extended distances across open terrain. It’s for someone who understands ballistic coefficients and wind drift, and wants a rifle capable of sub-MOA performance without the bolt manipulation of a traditional precision rig. It’s a serious instrument for serious shooting. And yes, it’s available at firearms-missouri.com for Missouri residents and nationwide, with an FFL transfer required for firearm purchases.
Frequently Asked Questions
Q: Is this rifle ready to shoot out of the box?
A: Yes. The CMMG Endeavor 300 MK3 is assembled, headspaced, and test-fired at the factory. It is drop-in ready—just add a compatible optic, a bipod, and ammunition. No gunsmithing is required to begin zeroing and shooting.
Q: What type of magazines does it use?
A: This rifle uses the Magpul PMAG® LR/SR GEN M3 20-round magazine it comes with, and is compatible with other SR-25/DPMS-pattern 6.5 Creedmoor magazines. This common pattern ensures you have plenty of options for spares and accessories.
Q: Is the 6.5 Creedmoor suitable for hunting in Missouri?
A: Absolutely. The 6.5 Creedmoor is an outstanding and increasingly popular cartridge for medium to large game like whitetail deer, with less recoil than a .308 Winchester and superior long-range energy retention. Always check local regulations for specific caliber restrictions.
If your goal is to consistently engage targets where others can only hope to reach, this CMMG Endeavor 300 MK3 provides the robust, accurate platform to do it. See the full details on our site.
Reviews
There are no reviews yet.