Firearm extraction system

摘要

An extraction system for extracting a cartridge from a firing chamber of a firearm includes an extractor mounted within the firearm bolt which has a bolt head with a plurality of lugs proximate a bolt face, a cartridge recess extending axially inward from the bolt face, and an extractor aperture extending radially outward through one of the lugs. A spring aperture extends axially through the one lug and intersects with the extractor aperture. The extractor is slidably mounted within the extractor aperture and has a hook portion for coupling with the cartridge and a transverse spring bore extending through a mid-section of the extractor. The extraction system further includes an extractor spring having an anchor portion mounted about the outer surface of the bolt and a cantilever spring portion inserted through the spring aperture and into the transverse hole in the extractor, for resiliently biasing the extractor toward the cartridge recess.

主权项

1. A firearm, comprising:
a receiver; a barrel having a chamber configured to receive a cartridge; and a bolt movable within the receiver, the bolt comprising:
a bolt head having a bolt face with a plurality of lugs formed thereabout, and a cartridge recess axially inward from the bolt face, an extractor aperture spaced rearwardly from the bolt face, the extractor aperture formed through a side wall of the cartridge recess and a selected one of the plurality of lugs, and a spring aperture extending axially through the selected lug and intersecting with the extractor aperture; an extractor slidably received within the extractor aperture, the extractor including a hook portion configured to couple with the cartridge received within the chamber; and an extractor spring extending along a cantilever spring portion that resiliently biases the extractor toward the cartridge recess to engage the hook portion with the cartridge.