Sight rib for firearm leveling

Firearms – With adjustable head space – By reaming

Patent

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Details

89 14C, F41G 102

Patent

active

044060785

ABSTRACT:
An improved sight rib for firearm leveling which is attachable to firearm barrels having a top located bore vent, said sight rib including a housing having one or more upwardly extending apertures in fluid communication with the bore vent. The rib preferably includes an expansion chamber in communication with the bore vent from which a plurality of oppositely disposed backwardly and upwardly inclined apertures extend. By use of an appropriate sight rib, a firearm may be fine-tuned to overcome recoil.

REFERENCES:
patent: 2916970 (1959-12-01), Mutter
patent: 3808943 (1974-05-01), Kelly
patent: 4008538 (1977-02-01), Center

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