Description
Picture this: you’re on a backcountry hunt in the Missouri Ozarks, and your shot placement needs to be decisive at 250 yards. Or maybe you’re securing a perimeter where reach and authority are non-negotiable. When it comes to bridging the gap between a battle rifle’s power and a modern sporting rifle’s ergonomics, you need a platform that doesn’t compromise. That’s the operational niche the CMMG Resolute 100 MK3 308 Win 16.1″ Barrel, 6-Position Black Stock Black Hardcoat Anodized, 20rd is built to dominate.
The CMMG Resolute 100 MK3 is a semi-automatic rifle chambered in .308 Winchester/7.62x51mm NATO. It features a 16.1-inch barrel, a 6-position collapsible stock, and a hardcoat anodized finish for durability. It ships with a 20-round magazine and is designed for reliable performance in demanding field and defensive scenarios.
This isn’t a range toy; it’s a purpose-built tool. The heart of the system is its 16.1-inch barrel, a length that strikes a critical balance. You get the ballistic efficiency of the .308 cartridge without the unwieldy length of a full-size rifle, making it maneuverable in tight spaces like a blind or a vehicle. The gas-operated, semi-automatic action is tuned for reliability with a wide spectrum of ammunition, from match-grade hunting loads to mil-spec ball. Here’s the thing—it’s built on the proven AR-10 platform, meaning it’s mil-spec compatible and ready for a vast ecosystem of aftermarket parts. Want to swap the handguard or trigger? You can, with components from brands like Magpul or Geissele. At $1672.63, this rifle positions itself as a serious investment in a do-it-all .308 platform.
Durability is engineered in, not just advertised. The entire receiver set and major components wear a black hardcoat anodized finish. This isn’t just for looks; it provides a hardened, corrosion-resistant surface that stands up to moisture, sweat, and hard use. The 6-position collapsible stock is a key feature for adaptability. You can quickly adjust the length of pull to fit different users, layers of clothing, or shooting positions—from standing to prone. The rifle weighs in at approximately 8.5 lbs unloaded, giving it a solid, stable feel that helps manage the .308’s recoil impulse. The included 20-round magazine offers substantial capacity, whether for a long day at the range or for a situation where reloading time is critical.
| Specification | Detail |
|---|---|
| Caliber | .308 Winchester / 7.62x51mm NATO |
| Barrel Length | 16.1 inches |
| Overall Length (Stock Extended) | Approx. 35.5 inches |
| Weight (Unloaded) | Approx. 8.5 lbs |
| Stock | 6-Position Collapsible, Black |
| Finish | Black Hardcoat Anodized |
| Magazine Capacity | 20 Rounds (Included) |
Pros & Cons
The primary advantage is versatility. The .308 cartridge is effective for hunting medium to large game at distance and is a proven defensive round. The adjustable stock and manageable 16.1-inch barrel make it adaptable for various users and environments. Being AR-10 pattern, customization is straightforward—no gunsmithing required for most common upgrades. On the downside, the .308 recoil is more pronounced than 5.56, and ammunition cost is higher. The rifle’s weight, while aiding stability, is a consideration for long carries.
Who It’s For
This rifle is for the shooter who demands one platform to handle multiple roles. It’s for the hunter who wants a semi-auto for driven game or hunting in thicker brush. It’s for the prepared citizen who recognizes the need for a capable, longer-range defensive tool that can also serve duty on the farm or ranch. It’s for the enthusiast who appreciates the modularity of the AR platform but requires the downrange energy of a .308. This rifle is available at firearms-missouri.com for Missouri residents and nationwide.
Frequently Asked Questions
Q: Is this rifle ready to shoot right away?
A: Yes, it is drop-in ready. It comes assembled and includes one 20-round magazine. You will need to supply your own optics or iron sights, as it features a flat-top upper receiver with a Picatinny rail for mounting. Remember, an FFL transfer is required for firearm purchases.
Q: What type of magazines does it use?
A: The CMMG Resolute 100 MK3 is designed to be compatible with standard SR-25/DPMS pattern .308 AR magazines. This includes popular and reliable magazines from brands like Magpul (PMAG® 308) and Lancer Systems.
Q: Is the 16.1-inch barrel sufficient for .308 Winchester?
A: Absolutely. While you sacrifice some velocity compared to a 20 or 24-inch barrel, the 16.1-inch configuration keeps the rifle handy and mobile. You retain effective terminal performance well beyond typical engagement distances for a rifle of this size, making it a potent tool within its designed envelope.
If a versatile, powerful, and modern .308 platform fits your requirements, the CMMG Resolute 100 MK3 warrants a close look. See the full details on our site.
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