SKU: CF710405
UPC: 8053670716445
MPN: CF710405
The Chiappa X-caliber 20ga/.45acp gauge adapter insert transforms your break-action shotgun into a versatile platform capable of firing both 20-gauge shotgun rounds and .45 ACP pistol ammunition. Designed for shooters who demand multi-caliber flexibility without investing in separate firearms, this adapter insert addresses the practical need for caliber conversion on the range, in training scenarios, or for dedicated sport shooting. Law enforcement and military professionals recognize break-action shotgun platforms as inherently reliable systems, and this adapter extends their utility considerably.
Measuring 8 inches in length and fully rifled throughout, the Chiappa X-caliber insert provides precision rifling geometry optimized for .45 ACP ballistics while maintaining compatibility with standard break-open shotgun receivers. The blued steel construction delivers corrosion resistance and a professional finish suitable for duty or hunting environments. Manual extraction—rather than automatic ejection—gives the operator tactile control over round removal and allows for field inspection of spent cartridges, a feature valued in training and quality-control scenarios. The insert's design supports use with any break-open shotgun platform equipped with a recommended extractor mechanism, making installation straightforward without permanent modifications.
This adapter insert benefits competitive shooters, law enforcement training divisions, and civilian operators seeking cost-effective ammunition versatility. Conversion between 20-gauge and .45 ACP is achieved by simple barrel swap or insert change—no gunsmithing required. Before installation, verify your shotgun's receiver accommodates the insert's 1.25-inch diameter and confirm extractor compatibility with your specific break-action model. The .45 ACP rifling ensures consistent accuracy downrange while the proven 20-gauge platform provides the mechanical reliability that tactical professionals depend on for mission-critical applications.
WARNING ⚠️ You must be 18 or older to purchase shotgun or rifle ammunition and 21 or older to purchase handgun ammunition and firearms. Please reference our requirements for ammunition orders to "restricted" states HERE. Always make sure you use the correct ammunition for your firearms. Ammo cannot be shipped to a PO Box. Please reference state & local laws before making a firearm or ammunition purchase.