Home / Accessory-Kits / Chiappa Firearms X-CALIBER 4 SET 20GA ADAPT KIT View cart “Barrett Firearms MRAD CONVERSION KIT 300NOR 26″” 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 CONVERSION KIT 300NOR 26″ $1,67500 $1,54543 Del-Ton UPPER RECEIVER PARTS KIT $1695 Sale! Ruger BARREL KIT LCPII 22LR SS THRD $16095 $11850 Sale! Del-Ton DELUXE REPAIR KIT $5695 $5495