Description
The CMMG M4 RCE .300 AAC Blackout 16″ Barrel Geissele 2-Stage Trigger Flat Dark Earth CTR Stock 30rd is a factory-built AR-pattern rifle chambered in the versatile .300 Blackout cartridge. It’s a value-oriented package that combines a premium Geissele trigger and Magpul furniture with CMMG’s reliable direct impingement system, offering serious performance at a mid-range price point of $1224.15. This rifle is drop-in ready for Missouri shooters seeking a capable, suppressed-ready platform without the cost of a custom build.
Key Features
- Geissele 2-Stage Trigger: A standout upgrade providing a crisp, predictable break for improved accuracy—a component often costing $200+ on its own.
- .300 AAC Blackout Chambering: Optimized for both supersonic and heavy subsonic rounds, making it an ideal candidate for use with a suppressor.
- Magpul CTR Stock & FDE Finish: Features the popular collapsible CTR stock for a solid cheek weld and a uniform Flat Dark Earth finish for a cohesive look.
- 16″ Barrel with Mid-Length Gas: Provides a good balance of velocity and maneuverability, with a mid-length gas system for reliable cycling and softer recoil impulse.
- Complete Rifle Configuration: Ships ready to fire with a 30-round magazine. No gunsmithing required, just perform a standard FFL transfer for firearm purchases.
Specifications & Details
| Caliber | .300 AAC Blackout |
| Barrel Length | 16 inches |
| Overall Length (Extended) | Approx. 35.5 inches |
| Weight (Unloaded) | Approx. 6.8 lbs |
| Trigger | Geissele 2-Stage |
| Stock | Magpul CTR (FDE) |
| Magazine Capacity | 30 Rounds |
The rifle uses a standard AR-15 lower receiver, which means a huge universe of aftermarket parts—from grips to safety selectors—is available for customization. It’s compatible with most .300 Blackout-specific magazines and many standard 5.56 PMAGs, though dedicated mags are recommended for optimal feeding. The 16-inch barrel length keeps it a handy rifle for field use or range duty, and it avoids the NFA paperwork associated with shorter barrels. At just under 7 pounds unloaded, it’s manageable for most shooters, and the mid-length gas system is known for its reliability across various ammo types. Here’s the thing—when you add up the cost of a baseline AR and then the Geissele trigger and Magpul stock separately, this package at $1224.15 starts to look like a very sensible deal.
Who This Rifle Is For
This CMMG build is perfect for the budget-conscious shooter who wants to step into the .300 Blackout world without sacrificing trigger quality. It’s for the Missouri hunter looking for a compact, effective medium-game rifle, or the recreational shooter who wants a suppressor host that’s more potent than a 9mm PCC. It also suits the AR enthusiast who appreciates a solid foundation from a reputable manufacturer like CMMG but plans to personalize it over time. Given its configuration, it’s a rifle that punches above its price class in terms of out-of-the-box performance.
Practical Pros & Cons
Pros: The inclusion of the Geissele trigger is the major value proposition, offering immediate performance gains. The .300 BLK chambering in a 16-inch platform provides flexibility for both loud and quiet shooting. The Magpul CTR stock is a proven, no-nonsense component. As a complete factory rifle, it comes with CMMG’s warranty and is available at firearms-missouri.com for Missouri residents and nationwide.
Cons: .300 Blackout ammunition is significantly more expensive than 5.56 NATO, which increases training costs. The 16-inch barrel doesn’t fully utilize the subsonic potential of the round like an 8 or 9-inch barrel would. While the FDE finish is popular, it’s not for everyone who prefers classic black. You are paying a premium for the caliber and trigger over a basic 5.56 rifle.
Frequently Asked Questions
Q: Can I shoot 5.56 NATO ammunition in this rifle?
A: Absolutely not. Firing 5.56 NATO in a .300 Blackout chamber is extremely dangerous and can cause a catastrophic failure. Always double-check your ammunition. The rifle is marked for .300 AAC Blackout, and you should only use certified ammo in that caliber.
Q: Is this rifle suppressor-ready?
A: Yes, the .300 AAC Blackout round is famously designed for suppression. The rifle has a standard 1/2×28 threaded muzzle (common specs indicate this), allowing you to direct-thread or use a muzzle device for a quick-attach suppressor. Using subsonic ammunition with a suppressor makes it exceptionally quiet.
Q: What kind of optic should I put on it?
A: That depends on use. For a general-purpose or hunting rifle, a low-power variable optic (LPVO) in the 1-6x or 1-8x range is a great choice. For close-quarters or fast shooting, a red dot sight is ideal. The rifle has a flat-top upper receiver with a Picatinny rail, so it’s compatible with virtually any modern optic mount.
If you’re looking for a .300 Blackout AR that delivers a premium trigger experience and trusted components without a custom shop price tag, this CMMG M4 RCE configuration represents a solid, practical value. Consider it for your next versatile rifle platform.
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