US PATENT SUBCLASS 89 / 4.5
.~ Blow back breech block

Current as of: June, 1999
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89 /   HD   ORDNANCE

4.05  DF  EXPLOSION OPENED BREECH {3}
4.5.~ Blow back breech block

DEFINITION

Classification: 89/4.5

(under subclass 4) Guns having blow back (unlocked) breech

blocks.

SEE OR SEARCH THIS CLASS, SUBCLASS:

194, for automatic guns of blow back type.