ALEXANDRIA, Va., Dec. 2 -- United States Patent no. 12,487,040, issued on Dec. 2.

"Firearm" was invented by Paul T. Noonan (Boise, Idaho).

According to the abstract* released by the U.S. Patent & Trademark Office: "An upper receiver is disclosed. The upper receiver contains a first inner surface configured to abut a first magazine protrusion, and a second inner surface configured to abut a second magazine protrusion."

The patent was filed on Jan. 10, 2024, under Application No. 18/409,139.

*For further information, including images, charts and tables, please visit: http://patft.uspto.gov/netacgi/nph-Parser?Sect1=PTO2&Sect2=HITOFF&p=1&u=%2Fnetahtml%2FPTO%2Fsearch-bool.html&r=1&f=G&l=50&co1=AND&d=PTXT&s1=12487040&OS=12487040&RS=12487040 ...