The technical field of {HEAD ~ this invention} relates to firearms and more particularly to an improvement in a means for adapting a different caliber sized magazine cartridge for firing in {TAIL ~ a firearm} 
The technical field of { HEAD ~ this invention } relates to firearms and more particularly to an improvement in a means for adapting a different caliber sized magazine cartridge for firing in { TAIL ~ a firearm }
OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL