Firearm magazine with shoulder retention
AssigneeBrowning
InventorsRobert G. Maughan, Ryan D. Cook
Life of this patent
Estimating the term…
Abstract
An adjustable insert for a firearm magazine can include: a contact surface to contact a cartridge shoulder; and an engagement interface positioned on a mating surface, the engagement interface being engageable with a portion of the firearm magazine, wherein the mating surface is positioned perpendicular to the contact surface; and wherein the engagement interface includes a predetermined adjustment resolution for incrementally adjusting the adjustable insert forward and backward along a plane parallel to a longitudinal axis of the firearm magazine to accommodate multiple sizes of cartridges.
Claims20
A firearm magazine, comprising:
- a housing comprising an upper periphery, a lower periphery, and an interior surface extending between the upper periphery and the lower periphery, wherein the interior surface defines a cavity sized to receive multiple sizes of cartridges;
- housing teeth positioned on at least one of the upper periphery, the lower periphery, or the interior surface;
- and
- an adjustable shoulder positioned within the housing to accommodate multiple sizes of cartridges, the adjustable shoulder comprising:
- shoulder teeth engageable with the housing teeth;
- and
- a stop surface engageable with a cartridge shoulder.
A firearm magazine, comprising:
- a housing;
- feed lips positioned on top of the housing;
- a position index located on at least one of the housing or the feed lips;
- and
- a movable stop engageable with the position index to position the movable stop at a plurality of positions within the housing to accommodate multiple sizes of cartridges,
- wherein when the movable stop is set at a position of the plurality of positions, the movable stop is configured to restrain forward axial movement of a cartridge via contact with a cartridge shoulder.
An adjustable insert for a firearm magazine, the adjustable insert comprising:
- a contact surface to contact a cartridge shoulder;
- and
- an engagement interface positioned on a mating surface, the engagement interface being engageable with a portion of the firearm magazine,
- wherein the engagement interface comprises a predetermined adjustment resolution for incrementally adjusting the adjustable insert forward and backward along a plane parallel to a longitudinal axis of the firearm magazine to accommodate multiple sizes of cartridges.
Dependencies are inferred from the claim text.