ALEXANDRIA, Va., Dec. 31 -- United States Patent no. 12,510,315, issued on Dec. 30.
"Firearm" was invented by Rene Weilharter (Marbach, Austria).
According to the abstract* released by the U.S. Patent & Trademark Office: "The invention relates to a firearm comprising: a housing (1) having a receptacle (2) for several cartridges or for a magazine with cartridges; a barrel unit (3) which is located in the housing (1) and has a barrel (4) and a cartridge chamber (6); a breechblock (8), which can be moved relative to the housing (1) and is biased in the firing direction by means of a return spring (7), for conveying cartridges into the cartridge chamber (6) or cartridge cases to an ejection port; and a gas braking device which is located in t...