Rock River Introduces BT3 Operator ETR Carbine

Rock River Introduces BT3 Operator ETR Carbine

Colona, IL – Rock River Arms, one of the industry’s most respected names in Modern Sporting Rifles and pistols, proudly introduces the BT3 Operator ETR Carbine. Engineered with precision and tailored for law enforcement applications, this rifle exemplifies Rock River Arms’ unwavering commitment to building the finest MSR platforms on the market.

The RRA BT3 Operator ETR Carbine stands as a testament to Rock River Arms’ dedication to providing law enforcement professionals with the utmost accuracy and reliability in their firearms. The new .308 rifle is equipped with a 16-inch chrome-lined barrel featuring a 1:10 twist rate, allowing shooters to consistently achieve tight groupings and superior performance. The chrome lining enhances durability and corrosion resistance, making it ideal for demanding law enforcement applications. With its optimized twist rate, the BT3 Operator ETR Carbine barrel can stabilize a wide range of bullet weights, providing versatility and effectiveness in various shooting scenarios.

The RRA BT3 Operator ETR Carbine incorporates several components that enhance its performance and user experience. The RRA Two Stage Ultra Match Trigger provides shooters with a smooth and precise trigger pull for optimal control and accuracy. The RRA 6-Position NSP-2 Car Stock offers adjustable length of pull and a comfortable and customized fit for each operator and the Hogue®Beavertail Grip enhances ergonomics for a secure and comfortable grip. Additionally, the RRA 13-Inch Lightweight Free Float Rail is M-LOK® Compatible, offers ample space for accessories and attachments for customization and adaptability to specific mission requirements. Together, these components contribute to the BT3 Operator ETR Carbine’s overall professional-grade performance, making it a reliable and versatile firearm for law enforcement professionals.

Rock River Arms has a long-standing reputation for excellence and remains dedicated to building the best AR-15 rifles in the industry. The RRA BT3 Operator ETR Carbine showcases the company’s commitment to precision engineering, quality craftsmanship, and continuous innovation. Law enforcement agencies can trust Rock River Arms to provide them with firearms that meet their demanding standards.

RRA BT3 Operator ETR Carbine Specifications

  • Caliber: .308 / 7.62X51mm NATO Chamber
  • Lower Receiver: RRA LAR-BT3 Billet Lower
  • Upper Receiver: RRA LAR-BT3 Billet A4 Upper
  • Barrel: 16-Inch Chrome Lined, 1:10 Twist
  • Muzzle Device: A2 Flash Hider / 5/8–24 Thread
  • Gas Block: Low Profile Gas Block, Mid-Length Gas System
  • Trigger: RRA Two Stage Ultra Match Trigger
  • Buttstock: RRA 6-Position NSP-2 Car Stock
  • Pistol Grip: Hogue® Beavertail Grip
  • Handguard: RRA 13-Inch Lightweight Free Float Rail, M-LOK® Compatible
  • Weight: 8.2 Pounds
  • Length: 34.5-Inches Retracted
  • Accuracy: 1.5 MOA at 100 Yards
  • Includes: One Magazine, Case, Extended Charge Handle Latch, 5-Slot Picatinny Rail, Quick Disconnect Port, Manual, and Warranty Information
  • MSRP: $1970.00

To learn more about the RRA BT3 Operator ETR Carbine and other Rock River Arms firearms, visit

Contact: Media Direct // Kim Cahalan // (309) 944-5341 //