Century Arms CA-3 .308 Win 18″ Threaded 20rd

About this product

The Century Arms CA-3 is a semi-automatic rifle assembled using surplus H&K G3 parts alongside new components produced for this model. Chambered in .308 Winchester / 7.62×51 NATO, the rifle uses a roller-delayed blowback system and features an 18-inch threaded barrel. The configuration includes a stamped receiver, fixed polymer stock, adjustable iron sights, and ships with a 20-round detachable magazine.

Key Specifications

• Chambered in .308 Win (7.62×51 NATO) for compatibility with common service-caliber ammunition.
• The barrel measures 18 inches and is described as threaded for muzzle devices.
• The barrel uses a 1:10 right-hand twist to stabilize standard .308 bullets.
• Barrel threads are specified as 5/8×24.
• The action operates with a roller-delayed blowback system derived from the G3 design.
• The rifle feeds from a 20-round detachable magazine.
• The receiver is stamped steel and compatible with standard G3-style mounting interfaces.
• The stock is described as a fixed synthetic / polymer military-style piece.
• Overall weight is listed as approximately 9.5 pounds.
• The rifle includes adjustable iron sights and an A2 birdcage-style flash hider on the muzzle.

This CA-3 blends original surplus parts and modern replacement components to preserve the G3-style ergonomics and function while providing parts produced for duty use. Its 18-inch threaded barrel and robust roller-delayed system make it a practical option for shooters seeking a historically styled platform with contemporary serviceable components.