CMMG Firearms & Accessories

CMMG firearms come out of Boonville, Missouri, where the company has been building AR-platform rifles, pistols, carbines, and parts since 2002. CMMG, or Central Missouri Machine Guns, is a family-owned and operated firearms manufacturer.

Brand Story

CMMG was established in Fayette, Missouri in 2002, when John, Jeff, Gretchen, and Stephanie Overstreet made the decision to create a quality AR rifle that can be afforded by everyone. The company initially manufactured barrels and uppers, but then began marketing complete rifles in 2005. Growth came steadily. By 2006, the company had grown enough that the Overstreet family could not keep up with demand, and CMMG began hiring full-time employees, expanding the facility, designing parts, and offering products in multiple calibers.

The real turning point came in 2017. CMMG introduced a new operating system called Radial Delayed Blowback. Unlike typical direct blowback systems, it uses a bolt that is forced to rotate and unlock, slowing the bolt carrier group enough to safely cycle. The benefits are most evident in the reduction of weight in the carrier and buffer, which means a lighter rifle and noticeably less felt recoil than a straight blowback system. For pistol-caliber AR builds, that is a significant practical difference. From raw material to finished product, CMMG firearms are manufactured in-house in Missouri. The company guarantees its products against defects in material or workmanship for the life of the product.

Product Lineup

BANSHEE Pistols and Short-Barreled Rifles

The BANSHEE covers traditional buffer-operated firearms with barrel lengths under 16 inches, essentially AR pistols and SBRs. The Banshee series has effectively redefined the pistol-caliber carbine market by offering a delayed blowback system that mitigates the harsh recoil impulse inherent to traditional designs. Available across multiple receiver platforms and calibers including 9mm, .45 ACP, 5.7x28mm, and others, these are compact builds that stay controllable without the sluggish bolt behavior of older direct blowback designs.

RESOLUTE Carbines

The RESOLUTE is CMMG’s traditional buffer-operated firearm with a 16-inch barrel. When you think of a traditional AR, for them, that is a RESOLUTE. It covers both rifle-caliber and pistol-caliber variants depending on the receiver platform selected and represents the most straightforward entry point into the CMMG lineup. A practical, full-length carbine without unnecessary complexity.

ENDEAVOR Precision Rifles

The ENDEAVOR is CMMG’s traditional buffer-operated firearm with barrel lengths greater than 16 inches, aimed at long-range and DMR-style applications. The 100, 200, and 300 series grades allow buyers to choose their trim level, from straightforward configurations up to fully featured builds with Cerakote finish options.

DISSENT Rifles

The DISSENT is CMMG’s bufferless AR. It utilizes CMMG’s patented Compact Action operating system that eliminates the need for a traditional buffer or tube. DISSENT models are available from pistols to full-length rifles and are easily recognized by their lack of buffer tube and front-side charger. This makes them particularly relevant for European buyers working within length restrictions, as the folding capability and compact profile open up configuration options that a standard buffer tube prevents.

AR Magazines, Conversion Kits, and CMMG Parts

CMMG’s AR parts are divided into several categories: upper parts, lower parts, ZEROED enhanced parts, AR conversions, magazines, and repair parts and kits. In 2010, CMMG patented and released its first .22LR AR conversion kit for the AR-15. The kits have continued to evolve over the years and remain a top seller to this day. CMMG magazines are platform-specific, designed to feed reliably in their Radial Delayed Blowback uppers and their pistol-caliber receiver sets. If you are running a CMMG upper in a non-standard caliber, use CMMG magazines.

Why We Stock CMMG

We sell CMMG at No Boring Guns because the demand is consistent and the support questions are few. Buyers in Europe who want a well-built American AR-platform rifle in a caliber beyond 5.56 NATO have limited serious options, and CMMG addresses that gap directly. The pricing sits in a competitive range for the quality level delivered, and we stock select models and CMMG parts with European shipping handled.

Frequently Asked Questions

Is CMMG made in the USA?

Yes. The entire manufacturing process is done within the United States, with most production carried out at CMMG’s facility in Boonville, Missouri. At this facility, CMMG handles all aspects of production, from machining to assembly and rigorous testing. This applies to complete firearms as well as individual components including barrels, receivers, and CMMG parts sold separately.

Is CMMG good quality?

Yes, with the context that the quality shows most clearly in their specialized products. CMMG firearms are categorized as high-performance, purpose-built tools that reward the knowledgeable enthusiast, offering superior performance characteristics, specifically in suppression and weight reduction, that justify their acquisition for specialized roles. Their Radial Delayed Blowback pistol-caliber builds, including the BANSHEE and RESOLUTE in 9mm and similar cartridges, are consistently regarded as among the most refined in that category. Every CMMG product is backed by a lifetime guarantee against defects in material or workmanship.

Is CMMG as good as Daniel Defense?

They serve different strengths, so the comparison depends heavily on what you are buying. Daniel Defense is known for their mil-spec 5.56 and 300 BLK rifle-caliber builds with a strong military pedigree. The CMMG Resolute and Endeavor lines, while competent, face stronger competition in the standard rifle-caliber market where entrenched Tier-1 manufacturers hold an edge. However, if you want an AR-platform firearm chambered in a pistol caliber, or a compact bufferless PDW-style build like the DISSENT, CMMG has no direct equivalent from Daniel Defense. Choose based on the specific platform and caliber you need.