Patent ID: 7137217

Claim:
A firearm mechanism of reduced mass yet capable of long range accuracy comprising in combination, a) a barrel defined by a proximal end, a dislal end and a bore, b) a cartridge storage means for containing and dispensing cartridges, c) a chamber structured to receive cartridges dispensed from said cartridge storage means, d) a breech attached to said proximal end forming a permanent operative combination of said barrel and said breech, e) said breech being structured to operatively receive said chamber to thereby provide an temporary operative combination of said barrel, said breech and said chamber, f) a receiver mounting said permanent operative combination for movement along a longitudinal axis between a proximal extremity and a distal extremity, g) transport means carried by said receiver to move said chamber into said breech while said permanent operative combination moves along said longitudinal axis toward said distal extremity thereby creating said temporary operative combination and to move said chamber out of said breech while said temporary operative combination is in motion along said longitudinal axis toward said proximal extremity, h) spring means structured to bias said permanent operative combination distally along said longitudinal axis and to be compressed by proximal movement of said permanent operative combination and i) trigger means to cause discharge of chambered cartridges with a predetermined delay after movement of said temporary operative combination toward said distal extremity has commenced.