Rock River Arms LAR-BT3 Varmint .308 Win Rifle, 20in Bull Barrel

The Rock River Arms LAR-BT3 Varmint is a semi-automatic rifle chambered in .308 Win/7.62x51mm NATO. It features a 20-inch cryogenically treated stainless steel bull barrel, billet upper and lower receivers, a rifle-length gas system, and a 17-inch free-float M-LOK-compatible handguard.

Designed for varmint applications and other practical rifle use, this configuration combines a two-stage trigger with a 1:10 twist rate and adjustable carbine stock system.

Key Specifications

• The rifle is chambered in .308 Win/7.62x51mm NATO.
• The action operates as a semi-automatic system.
• The rifle has a listed capacity of 20+1 rounds.
• The barrel measures 20 inches and uses a stainless steel bull profile.
• The barrel features a 1:10 twist rate and cryogenic treatment.
• The gas system uses a rifle-length configuration with a low-profile gas block.
• The rifle is equipped with a two-stage trigger.
• The handguard is a 17-inch free-float M-LOK-compatible rail.
• The upper and lower receivers are identified as billet receivers.
• The listed weight is 9.80 pounds.

With its stainless bull barrel, free-float handguard, billet receiver set, and match-style two-stage trigger, the LAR-BT3 Varmint provides a purpose-built platform for shooters seeking a substantial .308-caliber rifle configuration with adaptable accessory mounting.