Genuine U.S. military-issue Beretta M9 / M92FS 9mm magazine, manufactured by Check-Mate Industries, Inc. for U.S. government contracts. This is not a commercial aftermarket magazine—it's a true USGI contract mag, identifiable by the U.S. PATENT 6,055,758 floorplate marking and Check-Mate IND. body stamp.
 
Shows honest service wear consistent with military use, including finish wear and handling marks, but remains structurally solid. The feed lips are intact, witness holes are clear, and the baseplate is secure. These Check-Mate magazines were widely issued during the GWOT era and are known for proper military geometry and reliability when paired with OEM springs and followers.
 
A correct choice for M9 collectors, military surplus enthusiasts, or anyone looking for an authentic USGI-pattern magazine rather than modern commercial reproductions.