Short Lane, Shotgun Adapter, 12 Gauge to 22 LR or Shorts Scavenger Series, Fits 12 Gauge
Could the use of 'adapters' which fit into the chamber and swapping of the bolt, extractor and other parts allow firearms to use different calibers as long as the new cartridge is
Short Lane, Shotgun Adapter, 8" Rifled, 12 Gauge to 22 LR Pathfinder Series, Fits 12 Gauge Break Open Shotguns - Aztech Armory Canada
Chiappa X-Cal 12 Ga Adapter Set of 8 Inserts Case
Chiappa X-Caliber 12 Gauge Rifled Adapter *Choose Caliber NZ - Shotgun Parts by Gun City
12ga. With 7.62x39 insert - Louisiana Sportsman Classifieds, LA
X-CALIBER Survival-Rifle Gauge Adapter System - Soldier Systems Daily
X-CALIBER Survival-Rifle Gauge Adapter System - Soldier Systems Daily
Could the use of 'adapters' which fit into the chamber and swapping of the bolt, extractor and other parts allow firearms to use different calibers as long as the new cartridge is