As firearms owners and enthusiasts, we feel that everyone should enjoy the 2nd Amendment, including those behind the enemy lines of more restrictive states.
With this in mind, we set out to design a more “ban-proof” rifle. After many years of hard work and dedication, we are happy to announce the release of the Br4! The Br4 is a reimagined rifle that brings modern technology, handling, and ergonomics to those that have been forced to choose from dated firearm designs of over a century ago. The Br4 lower is a more traditional rifle version of our Mk4 platform and is designed to mimic classic rifle ergonomics yet capable of accepting all Mk4 compatible DISSENT upper groups. With these features, we are happy to say that the Br4 can ship to 47 states!
CMMG Br4 Dissent
To aid in being more restrictive state friendly, the Br4 incorporates more traditional rifle ergonomics by utilizing Remington 870 compatible stocks, and ships with a Magpul SGA stock. It has a reversible cross-bolt safety that is easily accessed while gripping the Br4 from the new stock and incorporates a new ZEROED drop in trigger designed by CMMG and built in conjunction with RISE Armament. The Br4 was made possible with the completion of the DISSENT which use our patented Compact Action, negating the need for a traditional buffer and tube. Using a DISSENT upper, you will be met with the familiar forward non-reciprocating side charger and full-length M-Lok free-float handguard.
At the time of release, the Br4 will come in your choice of seven calibers, and seven Cerakote options. Calibers will include 5.56, 300 blackout, 9mm (using our conversion magazines), 350 Legend, 6.5 Grendel, 6mm ARC, and 22 ARC. Look for more calibers to be released in the future along with new calibers in the full DISSENT lineup.


“With the AR platform under constant attack, we knew there would be a time that we’d need a to do something for people to have a capable rifle behind the enemy lines of more restrictive states and municipalities. With this in mind, we started looking into designs for this many years ago. The introduction of our compact action in our DISSENT lineup made this possible since we no longer must stay within the confines of a buffer tube operated system. We hope the Br4 allows many doors to be opened for people that have had that door closed on them.” Says Chris Reinkemeyer, CMMG CEO.
- 47 STATE COMPLIANT
- REMINGTON 870 STOCK COMPATIBILITY
- CROSS-BOLT SAFETY
- FORWARD NON-RECIPROCATING SIDE CHARGER
- ZEROED SINGLE STAGE TRIGGER
- M-LOK® FREE-FLOATING HANDGUARD
- ZEROED EXTENDED AMBI MAG CATCH/RELEASE
- 16.1″ OR 14.5″ PINNED & WELDED BARREL LENGTHS
- MULTIPLE CERAKOTE COLOR OPTIONS
About CMMG
CMMG began in central Missouri in 2002 and quickly developed into a full-time business because of its group of knowledgeable and passionate firearms enthusiasts committed to quality and service. Its reputation was built on attention to detail, cutting edge innovation and the superior craftsmanship that comes from sourcing all their own parts. By offering high quality AR rifles, parts and accessories, CMMG’s commitment to top-quality products and professional service is as deep today as it was when it began.