US 12,270,622 B1
Firearm magazine with shoulder retention
Robert G. Maughan, Kaysville, UT (US); and Ryan D. Cook, Morgan, UT (US)
Assigned to BROWNING, Morgan, UT (US)
Filed by Browning, Morgan, UT (US)
Filed on Jan. 17, 2024, as Appl. No. 18/415,020.
Int. Cl. F41A 9/71 (2006.01); F41A 9/70 (2006.01); F41A 9/69 (2006.01); F41A 9/73 (2006.01)
CPC F41A 9/71 (2013.01) [F41A 9/70 (2013.01); F41A 9/69 (2013.01); F41A 9/73 (2013.01)] 20 Claims
OG exemplary drawing
 
15. 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.