The Century Arms CA-3 assembled by PTR is a military surplus sourced G3 with a lot of original features and a configuration enthusiast have grown to love. The Century Arms CA-3 comes standard with original surplus parts including the fixed stock, forend, adjustable front sight, rotary aperture rear sight, trigger group (modified for compliance), bolt and bolt carrier. The American-made components by PTR include the trunnion, barrel, flash hider, stamped receiver, hammer, sear and charging handle