Locking lug insert for a firearm receiver

Details Locking lug insert for a firearm receiver Locking lug insert for a firearm receiver

1986-06-19

1988-01-19

Kyle, Deborah L.

Firearms

Breech loading

Sliding breechblock

42 25, F41C 700

Patent

active

047197145

ABSTRACT:
The present invention relates to a locking lug insert which is inserted into the locking lug recess of a bolt action receiver. The insert defines a central aperture aligned with an elongated chamber in the receiver and one or more cut-out portions opening into the central aperture, one cut-out aligned with each locking lug groove. The cut-out portions are equal in number to the number of locking lug grooves formed in the receiver. The cut-out portions are sized so as to accommodate the locking lugs of the bolt when the bolt is in its closed position. The insert is caused to rotate in the locking lug recess when the bolt rotates, due to the interengagement of the locking lugs, with the cut-out portions.

REFERENCES:
patent: 921042 (1909-05-01), Williams
patent: 2139648 (1938-12-01), Chambers
patent: 3027672 (1962-04-01), Sullivan
patent: 3260542 (1966-07-01), Di Milla
patent: 3710492 (1973-01-01), Tirrell
patent: 4402152 (1983-09-01), Casull
patent: 4454672 (1984-06-01), Timari
patent: 4547988 (1985-10-01), Nilsson

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