Ordnance – Automatic – Blow back breech block
Patent
1985-05-24
1987-03-17
Bentley, Stephen C.
Ordnance
Automatic
Blow back breech block
89197, F41D 1010, F41D 708
Patent
active
046498001
ABSTRACT:
A self-contained blowback-type firing unit insertable in a gun body as a discrete subassembly and including a barrel and bolt with a compression spring acting between them, characterized in that the barrel and bolt slide together on matching longitudinal track surfaces which are other than cylindrical and circumferentially complete, the bolt being slideable on no surfaces other than the barrel track surfaces.
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patent: 4019423 (1977-04-01), Johnson
patent: 4279191 (1981-07-01), Johansson
patent: 4327626 (1982-05-01), McQueen
patent: 4335643 (1982-06-01), Gal
Bentley Stephen C.
Johnson Stephen
Shepherd Industries Limited
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