Century Arms CA-3 | .308 Win | 18″ Barrel | 20rd | RI5601X

The Century Arms CA-3 is a G3-style semi-automatic rifle assembled in the U.S. from original surplus parts and new components produced by PTR. It is chambered in 7.62×51 NATO (.308 Win) and features an 18″ threaded barrel with a 1:10 twist and a birdcage-style flash hider. For optics, a versatile and budget-friendly option that pairs well with this platform is the Vortex Strike Eagle 1-6×24, which provides a clear field of view for both short- and medium-range work and remains well under $1,000.

Product Specifications

• The caliber is 7.62×51 NATO (.308 Win).
• The magazine capacity is 20 rounds and one magazine is included.
• The barrel measures 18 inches and is threaded.
• The barrel twist rate is 1:10 RH.
• The action type is Roller-delayed blowback (Semi-Auto).
• The receiver is made from stamped steel and supports classic G3-style optics mounting (claw-compatible).
• The barrel material is 4150 chrome-moly steel.
• The rifle’s overall length is 40.5 inches.
• The listed weight is 9.5 pounds.
• The stock material is polymer (surplus/OD GI polymer).
• The muzzle is fitted with a birdcage-style flash hider.
• Sight configuration is adjustable front sight with rotary aperture rear sight.
• The rifle includes a button & paddle magazine release.
• The finish/color is listed variously as OD Green / Matte Black / Battleworn in source data.
• The UPC is 787450911512.

This CA-3 blends authentic surplus G3 components with modern, U.S.-made parts to deliver a historically styled rifle with practical modern reliability. Its 18″ threaded barrel and robust stamped receiver make it a platform suited to range use and historical-collector interest, while the standard adjustable sights and included 20-round magazine provide immediate function out of the box.

Owners and enthusiasts commonly praise the CA-3 for its authentic G3 styling and the reliable operation of the roller-delayed blowback system.