An Armatix employee holds a “smart gun” by the company at the Armatix headquarters in Munich May 14, 2014. The gun is implanted with an electronic chip that allows it to be fired only if the shooter is wearing a watch that communicates with it through a radio signal. If the gun is moved more than 10 inches (25 cm) from the watch, it will not fire. A Maryland gun shop owner has dropped his plan to be the first in the United States to sell the so-called “smart gun” after a backlash that included death threats. (Photo by Michael Dalder/Reuters)

Gas-masked men of the British Machine Gun Corps with a Vickers machine gun during the first battle of the Somme, 1916. (Photo by General Photographic Agency/Getty Images)

Heavy artillery on parade during a review of the Moscow Garrison troops during the May Day celebrations in Red Square, passing posters of Lenin and Stalin. (Photo by N. Sitnikov/Hulton Archive/Getty Images). 1st May 1947

A German special anti-tank gun is ready to fire during the army maneuvers in Silesia, Poland, on September 22, 1928. (Photo by AP Photo)

A child holds a gun at the National Rifle Association (NRA) annual convention in Indianapolis, Indiana, U.S., April 15, 2023. (Photo by Evelyn Hockstein/Reuters)

Demi Rose seen attending I Saw It First party at SUSHISAMBA Covent Garden on February 11, 2019 in London, England. (Photo by The Mega Agency)

Demi Rose attends The Beauty Awards with OK! in London, England on November 28, 2017. (Photo by James Curley)

A model presents a creation for Irish-American designer Paul Costelloe during the catwalk show for his Autumn/Winter 2023 collection on the opening day of the London Fashion Week, in London, on February 17, 2023. (Photo by Niklas Halle'n/AFP Photo)