Chiappa Firearms Adapter System for 12 Gauge Barrel Fits Chiappa X-Caliber Set of 8. 410/45COLT 20GA cal. to a 20GA shotgun. Each 7in adapter has a lip for better cartridge extraction. It comes in a green bag. Only for break action shotgun. Specifications for Chiappa Firearms 12GA .380 ACP/9mm/.357 MAG/.38 SPL Caliber Conversion Kit w/ Case: Manufacturer: Chiappa Firearms Color: Black Finish: Blued Fabric/Material: Steel Gun Make: Universal Gun Model: Universal Caliber: .410 Bore .44 Magnum .45 Colt .38 Special .357 Magnum 9mm Luger .380 ACP .40 S&W .45 ACP Magazine Capacity: 1 Round Magazine Included: No Gauge: 12 Package Contents: Chiappa Firearms 12GA .380 ACP/9mm/.357 MAG/.38 SPL Caliber Conversion Kit w/ Case The Chiappa Firearms 970387 X-Caliber Adapter Set 12 Ga 8 Pistol Calibers Black is a quality addition to the Chiappa Firearms lineup. For more great deals on Gun Parts by Chiappa Firearms please browse our Chiappa Firearms Gun Parts page. What firearm models does the manufacturer say Chiappa Firearms 12GA .380 ACP/9mm/.357 MAG/.38 SPL Caliber Conversion Kit w/ Case is compatible with? The manufacturer suggests that Chiappa Firearms 12GA .380 ACP/9mm/.357 MAG/.38 SPL Caliber Conversion Kit w/ Case is compatible with UniversalChiappa Firearms 970387 X-Caliber Adapter Set 12 Ga 8 Pistol Calibers Black