The Chiappa Firearms CHIAPPA X-CALIBER 12GA/40S&W blends precision engineering with practical versatility, delivering a steel, fully rifled 8" gauge adapter insert that enables reliable 12 gauge and .40 S&W performance in a single, compact platform. Built for break-open configurations and compatible with any break-open-recommended extractor, this blued, manual extraction accessory provides a secure, precision-fit solution that enhances versatility for field use, training, or collector demonstrations. Measuring a compact 1.40 x 1.30 x 7.45 inches and designed to pair with 12ga/40S&W ammunition profiles, the X-Caliber insert leverages its robust steel construction to maintain consistent accuracy and dependable cycling across diverse shooting scenarios. Whether youre expanding your shotgun capabilities, testing new loads, or adapting to specialized sporting or tactical tasks, this adapter insert from Chiappa Firearms delivers dependable performance, straightforward handling, and a streamlined profile that integrates seamlessly with existing break-open platforms.