Description
The CMMG MK3 CBR .308 16″ Barrel SV Brake, RKM15 Hand Guard, Magpul MOE Grip, ACS-L Butt Stock, 20 Rd Mag is a factory-built, direct-impingement AR-10 style rifle chambered in .308 Winchester/7.62x51mm NATO. It’s a complete, ready-to-shoot package designed to deliver the power of a full-size battle rifle in a more maneuverable 16-inch barrel configuration, offering a solid blend of performance and practicality right out of the box.
Key Features
- 16″ Barrel with SV Muzzle Brake: Balances velocity and handling; the brake helps manage the .308’s substantial recoil.
- RKM15 M-LOK Handguard: Provides a lightweight, modern platform for mounting lights, grips, and other accessories.
- Magpul Furniture Suite: Includes the proven MOE pistol grip and the adjustable, storage-capable ACS-L stock for enhanced ergonomics.
- Complete Factory Rifle: No assembly required—just perform your FFL transfer and it’s range-ready.
- 20-Round Magazine Included: Comes with a standard-capacity mag to get you started.
Specifications & Details
| Specification | Detail |
|---|---|
| Caliber | .308 Winchester / 7.62x51mm NATO |
| Barrel Length | 16 inches |
| Overall Length (Stock Extended) | Approx. 35-38 inches |
| Weight (Unloaded) | Approx. 8.5 – 9 lbs |
| Handguard | CMMG RKM15 M-LOK |
| Stock | Magpul ACS-L |
| Magazine Capacity | 20 Rounds (Mag Included) |
Weighing in around 8.5 to 9 pounds unloaded, this rifle has a substantial feel that aids in recoil management without being overly cumbersome. The 16-inch barrel is the sweet spot for many shooters—it keeps the overall length down for easier transport and handling in the field, while still providing excellent ballistic performance for the .308 round at practical engagement distances. The included SV muzzle brake is a key component, redirecting gas to counteract muzzle rise and felt recoil, making follow-up shots quicker. This is a mil-spec compatible platform, so you’ll find a wide range of aftermarket parts from brands like Geissele, Radian, and Bravo Company if you decide to customize later.
Who This Rifle Is For
This CMMG MK3 is for the shooter who wants a dependable, general-purpose .308 rifle without the premium price tag of some boutique brands. It’s ideal for hunters in brush or timber, a robust home defense option for those on larger properties, or a versatile rifle for recreational shooting and training. If you’re looking for a “do-most” rifle that brings serious power to the table but don’t want to piece together a build from scratch, this package makes a lot of sense. At $1589.34, it sits in a competitive space, offering more features than a bare-bones base model but without venturing into custom gun territory.
Practical Pros & Cons
Pros: The main advantage is value. You get a complete, functional rifle from a reputable manufacturer with popular Magpul furniture already installed. The 16-inch barrel offers a great balance, and the muzzle brake works. It’s drop-in ready, requiring no gunsmithing to start shooting. The package is available at firearms-missouri.com for Missouri residents and nationwide.
Cons: The tradeoff for the price is that it may not have some of the high-end finishes or ultra-lightweight components of rifles costing twice as much. The .308 cartridge in a gas-operated AR platform will always have more recoil and be heavier than an AR-15. Ammo cost is also a factor—.308 is significantly more expensive to feed than 5.56mm, so your practice budget needs to account for that.
Frequently Asked Questions
Q: Does this rifle use standard AR-10/SR-25 pattern magazines?
A: Yes, the CMMG MK3 is designed to be compatible with Magpul PMAG .308 LR/SR Gen M3 magazines and other common SR-25 pattern magazines, giving you plenty of affordable and reliable options beyond the included 20-rounder.
Q: Is the muzzle brake removable if I want to install a suppressor?
A: Absolutely. The SV brake is threaded onto the standard 5/8×24 barrel threads. You can remove it to install a muzzle device of your choice or direct-thread a .30 caliber suppressor, provided you comply with all applicable NFA regulations.
Q: How does this compare to a similar 5.56mm AR-15 in terms of cost and use?
A: Look, it’s a different tool. This .308 rifle hits harder at longer ranges and is better suited for medium game hunting. The initial price is higher, ammunition costs more, and it’s heavier. For most tactical training or high-volume plinking, a 5.56 is more economical. This is for when you need the authority of the .308 cartridge.
If you need a capable, no-fuss .308 rifle that delivers solid performance without a custom shop price, this CMMG package deserves a close look. Check current availability and pricing on our site.
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