Description
The CMMG Resolute 300 9mm 16″ Barrel Black CMMG 6 Position RipStock Synthetic Stock 33rd Mag is a 9mm carbine built on an AR-15 platform, offering a rifle-caliber experience with affordable pistol ammunition. It’s a direct-blowback, semi-automatic firearm designed for reliable performance, range fun, and home defense, featuring a 16-inch barrel and a 33-round magazine. This model is a solid choice for budget-conscious shooters wanting a versatile 9mm rifle that fits out of the box with standard AR-15 parts.
Key Features
- 16″ Barrel in 9mm: Provides better velocity and accuracy than a pistol, without the cost of rifle ammo.
- 6-Position RipStock: Adjustable length of pull to fit any shooter, from compact storage to a full rifle stance.
- 33-Round Magazine: High capacity for extended range sessions or competition stages.
- Direct Blowback Operation: Simple, proven reliability that’s easy to maintain.
- AR-15 Platform Familiarity: Controls, ergonomics, and accessory mounting are identical to the ubiquitous AR-15.
Specifications & Details
| Caliber | 9mm Luger |
| Barrel Length | 16 inches |
| Overall Length | Approx. 34.5″ (Stock Collapsed) |
| Weight | Approx. 6.5 lbs (Unloaded) |
| Magazine Capacity | 33 Rounds (Included) |
| Action | Semi-Automatic, Direct Blowback |
The Resolute 300 uses CMMG’s proprietary radial-delay blowback system in some models, but this specific variant operates on a straightforward direct blowback system. That means fewer moving parts and a generally lower price point—a practical trade-off for the value-focused buyer. The synthetic stock and standard handguard keep the weight manageable at around 6.5 pounds unloaded. Here’s the thing—while the MSRP might seem high, the street price of $1721.51 positions it against other premium 9mm carbines, but with the benefit of CMMG’s reputation for quality. It ships to Missouri and compliant US states, requiring an FFL transfer for firearm purchases like any other rifle.
Who This Rifle Is For
This carbine is ideal for the shooter who already owns an AR-15 and wants a cheaper-to-feed training companion. It’s perfect for plinking, introductory carbine courses, or home defense where over-penetration is a concern. Competition shooters in PCC (Pistol Caliber Carbine) divisions will appreciate the familiar platform and high-capacity mag. If you’re budget-conscious but want a rifle from a reputable manufacturer without custom gunsmithing, this is a strong contender. The 16-inch barrel makes it a rifle under federal law, avoiding the NFA paperwork of an SBR.
Pros & Cons
Pros: Ammunition cost is significantly lower than .223/5.56. Recoil is very mild, making it great for new shooters. It shares manual of arms and many components with the standard AR-15 platform—think triggers, grips, and optics mounts. The included 33-round magazine offers great capacity right away. It’s mil-spec compatible for many parts, allowing for easy customization.
Cons: At this price, you’re entering the territory of a basic, but complete, 5.56 AR-15. The direct blowback action can have more perceived recoil impulse than a radial-delay or gas-operated system. As a dedicated 9mm platform, it doesn’t convert to other calibers easily. You’re investing in a niche—a pistol-caliber rifle—rather than a more common centerfire rifle.
Frequently Asked Questions
Q: What magazines does this CMMG Resolute 300 use?
A: This model ships with a proprietary 33-round magazine. CMMG’s 9mm AR-style rifles often use modified AR-15 magazines or their own specific pattern. It’s not typically compatible with Glock magazines unless specifically noted as a “Glock mag” model. Always verify magazine compatibility for your specific lower receiver.
Q: Is this a good home defense firearm?
A: It can be. The 9mm round from a 16-inch barrel gains some velocity, and with modern defensive hollow-point ammunition, it’s a viable option. The rifle platform offers better control and accuracy than a handgun for most people. However, consider overall length—at nearly 35 inches, it may be less maneuverable in tight hallways than a pistol or shotgun.
Q: Can I use my existing AR-15 parts on this rifle?
A: Mostly, yes. The lower receiver accepts standard mil-spec AR-15 trigger groups, pistol grips, and buffer tubes. The upper receiver uses a standard barrel nut threading, so many handguards designed for the AR-15 will fit. The bolt carrier group and magazine are specific to this 9mm model, however.
For a reliable, factory-built 9mm carbine that leverages the AR platform’s simplicity and aftermarket, the CMMG Resolute 300 presents a clear value proposition. Available at firearms-missouri.com for Missouri residents and nationwide.
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