Home / Accessory-Kits / Chiappa Firearms X-CALIBER 4 SET 20GA ADAPT KIT View cart “Barrett Firearms MRAD BREECH CONVERSION KIT” has been added to your cart. Sale! Chiappa Firearms X-CALIBER 4 SET 20GA ADAPT KIT$20356 $18298 Out of stock SKU: 970.435 Category: Accessory-Kits Product ID: 34297 Description Description 4 Set Adapter System 20 ga.9mm-357/38-45ACP-410/45Colt Related products Sale! Barrett Firearms MRAD BREECH CONVERSION KIT $47500 $44734 Del-Ton UPPER RECEIVER PARTS KIT $1695 Del-Ton DELTA RING ASSEMBLY $1295 Sale! Del-Ton RIFLE KIT 16″ $45000 $40673