Magazine and firearm with positional adjustment of magazine spring

摘要

A firearm magazine housing contains a spring to forcibly urge a follower with ammunition rounds stacked thereon toward an open end of the housing, thereby to facilitate delivery of the ammunition rounds into the firing chamber of a firearm. By a positional adjustment of the spring, the urging force that the spring applies to the follower during loading of ammunition rounds is reduced.

主权项

1. A magazine apparatus for delivering ammunition rounds into a firing chamber of a firearm, comprising:
a housing configured for insertion into a magazine well of the firearm; a follower disposed and movably supported within said housing, said follower configured to support thereon a stack of ammunition rounds within said housing; a spring disposed within said housing for forcibly urging said follower and the stack of ammunition rounds toward the firing chamber when said housing is inserted in the magazine well; said housing having a pair of opposed sidewalls that face one another in a direction generally transverse to a compression direction of said spring; and a locking assembly carried on said spring at a position intermediate opposite ends of said spring, said locking assembly cooperable with one of said sidewalls to releasably lock said spring to said housing with first and second portions of said spring relatively less and more compressed, respectively.