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Interchangeable caliber semi-automatic rifle










Image Number 4 for United States Patent #7631453.

A semi-automatic rifle kit comprises a receiver; first and second bolt assemblies that can be interchangeably inserted inside the receiver when no barrel is coupled to the receiver; and first and second barrels that can be interchangeably coupled to the receiver when no bolt assembly is inserted inside the receiver. The first bolt assembly can be inserted inside the receiver when the first barrel is coupled to the receiver, but not when the second barrel is coupled to the receiver. The second bolt assembly can be inserted inside the receiver when the second barrel is coupled to the receiver, but not when the first barrel is coupled to the receiver. The first bolt assembly and the first barrel are designed for use with a first type of cartridge, but not a second type of cartridge. The second bolt assembly and the second barrel being are designed for use with the second type of cartridge, but not the first type of cartridge.








 
 
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