KAK HEAVY BOLT CARRIER EXTENSION

- Steel - Mnanganese phosphate - Special applications for 9mm and 45 ACP builds where the internal BCG weight must be removed - 3.89 oz - Direct replacement for factory model and can be swapped quickly and easily back and forth - Retaining O-Rings and bumper O-Rings are installed - AR folding stock adapter not included - Does not work with the Sylvan folder