Chiappa X-Caliber 20GA/9mm Gauge Adapter Insert

The Chiappa X-Caliber 20GA/9mm Gauge Adapter Insert (Chiappa part no. CF710.406) lets owners of break-open shotguns fire 9mm ammunition through a 20-gauge barrel. Built from steel and finished blued, this 8-inch insert is fully rifled for stabilized bullet flight and designed for use with any break-open shotgun, though a recommended extractor is advised for smooth case removal. Extraction is manual, so shooters should be prepared to clear spent cases by hand after each shot.

Key Specifications

• Converts a 20-gauge break-open shotgun to fire 9mm ammunition.
• Barrel insert measures 8 inches long and is fully rifled.
• Constructed from steel with a blued finish.
• Designed for use with any break-open shotgun; a recommended extractor is advised.
• Extraction is manual, requiring the shooter to clear spent cases by hand.

Frequently Asked Questions

What firearms is this insert compatible with? It’s designed for use with any break-open shotgun chambered in 20 gauge, though a recommended extractor is advised for smooth operation.

Does this insert eject spent cases automatically? No, extraction is manual, so the shooter clears spent cases by hand after each shot.

Buy the Chiappa X-Caliber 20GA/9mm Gauge Adapter Insert

Add genuine caliber versatility to your break-open shotgun. Chiappa Firearms builds the X-Caliber insert line for straightforward gauge conversion. Order it from our Lubbock, Texas gun shop and browse our full shotgun accessories and parts selection for fast, direct shipping.