KAK HEAVY BOLT CARRIER EXTENSION

-STEEL -MANGANESE 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 INSTALLEDAR FOLDING STOCK ADAPTER NOT INCLUDEDDOES NOT WORK WITH THE SYLVAN FOLDER