Home / Accessory-Kits / Chiappa Firearms X-CALIBER 4 SET 20GA ADAPT KIT You cannot add "Wilson Combat BUFFER SPRING AR15" to the cart because the product is out of stock. 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! Del-Ton RIFLE KIT M4 16″ M-LOK BLACK $53300 $46241 Del-Ton LOWER PARTS KIT $5500 Sale! Barrett Firearms MRAD CONVERSION KIT 300NOR 26″ $1,67500 $1,54543 Sale! Ruger BARREL KIT LCPII 22LR SS THRD $16095 $11850