The CMMG BR4 is a sleek innovative firearm designed with versatility and compliance in mind for uniquely restricted regions. Chambered in 9mm it boasts a 16.1" empire profile unthreaded barrel with a recessed crown a standout feature for areas prohibiting threaded barrels without sacrificing accuracy or performance. Weighing in at 7.6 lbs and forged from durable 7075-T6 aluminum the BR4 is remarkably lightweight yet solid. Its forward non-reciprocating side charger enhances handling while the proprietary Zeroed single-stage trigger ensures a crisp reliable pull. Matched with a cross-bolt safety and integration with Remington 870-compatible Magpul SGA stocks it caters to shooters valuing ergonomic customization. Packaged with two 10-round Magpul PMAGs and available in seven distinct color options the CMMG BR4 excels as a high-performing state-focused option for AR-15 enthusiasts.