Christensen Arms carbon fiber gunsmith barrel blanks crafted with their proprietary layering system for strength and accuracy while weighing less than a steel barrel of the same contour. The barrel lining is made from match-grade 416R stainless steel, which is bored, reamed, hand lapped, and button rifled to tight tolerances. Includes threaded muzzle and thread protector. Weight estimates for .308 blanks range from 2 lb 12 oz to 3 lb 5 oz for lengths between 20 and 26 inches. Available lengths include 20, 24, and 26 inches.