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. CMMG was dedicated to building quality AR15 rifles and parts in the growing and changing market.
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.
In 2009, CMMG established a design and engineering team to ensure CMMG would release innovative, high quality, products that excite customers. Premium materials and proven manufacturing methods are utilized to ensure a quality, reliable, and durable product. As design and engineering continued to grow, CMMG established a dedicated quality control department to ensure all parts meet or exceed CMMG’s high quality expectations.
In 2010, CMMG patented and released its first 22LR AR Conversion Kit for the AR15. The kits have continued to evolve over the years, but there is little doubt that this kit signaled a major innovation for CMMG.
In 2014, CMMG released a breakthrough product called the Mk47 that would cement the company as one of the premier innovators in a crowded AR market. With the Mk47, CMMG designed an AR style rifle around the popular 7.62x39mm round commonly found in the AK47. CMMG’s design team settled on a proprietary mid-size platform that combines the strengths of the AR10, AR15, and AK47. The Mk47 combines the accuracy and modularity of the AR-15 with the reliability of the AK47. The Mk47 was designed to harness the power and reliability of the 7.62x39mm cartridge utilizing the POWERBOLT bolt carrier group. The Mk47 won multiple awards for CMMG.
With the success of the Mk47, CMMG then added a standard AR15 mag-well to the mid-size platform and released the MkW-15 chambered in the wildcat .458 SOCOM in 2016. The positive response from customers, retailers, professional shooters, and industry partners confirmed CMMG’s decision to release innovative AR style rifles that address issues commonly found in the AR15.
In 2016, CMMG relocated to a new location in Boonville, Missouri to address infrastructure constraints. Boonville was the childhood home of the Overstreet brothers and it allowed existing team members to stay with CMMG after the transition. CMMG began producing firearms, parts, and accessories on October 24, 2016 in its new manufacturing and assembly facility.
In April 2017, CMMG released yet another game changing innovation. This time, it was a new operating system called Radial Delayed Blowback. Unlike typical direct blowback systems, CMMG’s Radial Delayed Blowback uses a bolt that is forced to rotate and unlock, slowing the bolt carrier group enough to safely cycle. The benefits of Radial Delayed Blowback are most evident in the reduction of weight in the carrier and buffer. Not only does this system mean you have a lighter rifle, the felt recoil is noticeably less than on a straight blowback system. The Radial Delayed Blowback system has since been used to chamber calibers that have historically been problematic in the AR15 platform, such as 10mm, 45 ACP and 40 S&W. CMMG has also used it to chamber 9mm and 5.7x28mm.
In 2019, CMMG sought to bring the benefits of Radial Delayed Blowback to anyone who owns a milspec AR15/M16 lower receiver. Working in collaboration with Mean Arms, CMMG released the 9mm AR Conversion Magazine. The 9mm AR Conversion Magazines make it possible to pair a milspec AR15 lower receiver with a CMMG 9mm Radial Delayed Blowback upper receiver.
Following the success of the 9mm AR Conversion Magazines, CMMG released its 5.7 AR Conversion Magazines at SHOT Show 2020. This release made Radial Delayed Blowback even more accessible to AR owners by allowing them to shoot 5.7x28mm from their milspec AR15/M16, simply by swapping and upper and a magazine.
To this day, CMMG remains committed to bringing true innovation and quality to the industry. Although the nature of our business continues to evolve, one thing does not—our commitment to meet each and every morning to pray for God’s wisdom in managing the enormous responsibility that comes with this business. By His grace, we continue to grow.