SCAR BOLT & CARRIER GROUP 421 SCAR 16 BOLT ASSEMBLY 421 SCAR 16 BOLT ASSEMBLYProduct Code : scar421 NEW HIGH PRESSURE NICKEL BORON SCAR 16 BOLT ASSEMBLY, 5.56 #421. BEST BOLT AVAILABLE. THIS BOLT COMES WITH EXTRACTOR … + More $349.00 This product is currently out of stock ...