Patent ID: 7571671

Claim:
A firearm ( 10 ) comprising a stock ( 11 ), a barrel ( 30 ), having a barrel end 32 , 33 and being axially displaceable relative to said stock and supported at or in a linear guide ( 20 ), a cartridge seat ( 31 ) being configured in said barrel to receive a cartridge (P), a closing system ( 40 ) fitted with a closing head ( 41 ) to close the cartridge seat ( 31 ) configured in the barrel, said closing head ( 41 ) being axially affixable in the barrel end ( 32 , 33 ) when the firearm ( 10 ) is being closed, a striker pin, the closing head 41 being traversed by the striker pin ( 18 ) centrally to the barrel axis (A), a locking system ( 80 ) to lock the firearm ( 10 ) in its closed position; wherein the closing system ( 40 ) is substantially axially symmetrical and/or rotationally symmetrical relative to the barrel axis (A), and wherein said closing system ( 40 ) further comprises: radial or radially acting closing members ( 60 ) to affix the closing head ( 41 ) in place, said closing members ( 60 ) engaging corresponding closing elements ( 65 ) in the barrel end ( 32 , 33 ) when the barrel ( 30 ) is longitudinally displaced, wherein the closing head ( 41 ) is supported in axially displaceable and/or rotatable manner at a support ( 50 ) which is coaxial with the barrel axis (A), the support ( 50 ) being stationary at or in a housing ( 90 ) solidly joined to the stock ( 11 ) and the locking system ( 80 ) comprises radial and/or radially acting detent or locking elements ( 81 ) which may be made to engage the closing head ( 41 ) and/or the support ( 50 ) when the firearm ( 10 ) is being closed.