Elastomeric extractor member

摘要

A biasing member for a bolt assembly of a firearm is described herein. The biasing member comprises a body having a first portion configured to engage and seat within a biasing member receiving indentation of an arm of the extractor, and a second portion configured to engage and seat within a receiving area along a bolt of the firearm. The body provides a biasing force directed against the extractor arm. The body comprises an elastomeric material, and is configured such that the first and second portions provide varying levels of compression sufficient to maintain a substantially constant extractor tension between the extractor arm and a cartridge.

主权项

1. A bolt assembly for a firearm, comprising:
a bolt; an extractor arm pivotally mounted in the bolt having a biasing member receiving indentation formed thereon; and a biasing member in mechanical communication with the extractor arm and the bolt so as to provide a biasing force against the extractor arm, the biasing member comprising a compressible body having a first cylindrical portion engaged with the biasing member receiving indentation of the extractor arm and having a first diameter and a second cylindrical portion received along the bolt and having a second diameter greater than the first diameter, wherein the body consists essentially of an elastomeric material and is configured to maintain a substantially constant extractor tension between the extractor arm and a cartridge engaged by the bolt assembly.