Sub-base for top-mounted gunsight

Details Sub-base for top-mounted gunsight Sub-base for top-mounted gunsight

1993-05-25

1994-10-18

Johnson, Stephen M.

Firearms

Muzzle making, attaching or repair

33247, 33250, F41G 1387

Patent

active

053556070

ABSTRACT:
A sub-base for a gun, such as a semiautomatic shotgun, that has a metal receiver. The sub-base of this invention permits a gunsight, such as a telescopic gunsight, to be removably mounted to the top of the gun's receiver with rigidity sufficient to remain in calibration permanently despite recoil. This substantial rigidity is obtained by fastening the sub-base to both sides of the receiver at their thickest parts and by angling the fasteners to maximize their holding power.

REFERENCES:
patent: 1710547 (1929-04-01), Meise
patent: 2556903 (1951-06-01), Clark
patent: 4867039 (1989-09-01), Dobbins

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