The Rock River Arms LAR-BT3 Varmint rifle in .308 Winchester is engineered for consistent shot placement in both field environments and on the range. This platform establishes a stable foundation for demanding varmint control operations and precision target engagement. Its construction integrates RRA BT-3 billet upper and lower receivers, providing robust structural integrity and a rigid base for critical components.
The rifle features a 20-inch stainless steel bull barrel, precision-machined with a 1:10 twist rate and subjected to cryogenic treatment. This barrel profile and treatment are designed to mitigate thermal shift during extended firing sequences, thereby contributing directly to repeatable accuracy performance.
Key Features & Engineering
Receivers
- RRA BT-3 Billet A4 Upper and Billet Lower: Machined from solid billet, these receivers provide a highly rigid and dimensionally stable platform. This precision machining ensures optimal component integration and consistent optical alignment, critical for accuracy.
Barrel Assembly
- 20-inch Stainless Steel Bull Barrel, 1:10 Twist, Cryogenically Treated: The heavy bull barrel profile enhances stiffness and thermal mass, while cryogenic treatment further optimizes material stability. This combination actively supports thermal consistency during rapid or extended firing schedules, a vital characteristic for a precision rifle.
Fire Control Group
- RRA Two Stage Trigger: This precision trigger system offers a clean, predictable break, facilitating controlled shot execution. This mechanical advantage is beneficial for fine adjustments during target acquisition and follow-through.
Handguard
- 17-inch RRA Lightweight Free Float Rail, M-LOK Compatible: The free-float design eliminates barrel contact, preserving its harmonic stability. The M-LOK interface provides ample surface area for mounting essential firearm accessories such as bipods or lights, without compromising barrel accuracy.
Furniture
- RRA 6-Position NSP-2 Carbine Stock and Hogue Rubber Grip: These components are selected to optimize the user interface and rifle manageability. The stock facilitates length-of-pull adjustment for various shooter preferences, and the Hogue grip enhances firearm control and reduces felt recoil during extended shooting sessions.
Technical Specifications
- Caliber: .308 Winchester
- Receivers: RRA BT-3 Billet A4 Upper, RRA BT-3 Billet Lower
- Barrel: 20-inch Stainless Steel Bull, Cryogenically Treated
- Barrel Twist Rate: 1:10
- Trigger: RRA Two Stage
- Handguard: 17-inch RRA Lightweight Free Float, M-LOK Compatible
- Stock: RRA 6-Position NSP-2 Carbine
- Grip: Hogue Rubber Grip
Equipped to reliably handle various types of hunting ammunition, the LAR-BT3 Varmint rifle stands as a purposeful instrument for the discerning shooter who prioritizes consistent reliability and repeatable accuracy in their platform.
