X277 "Viper" magnetic rail cannon

The X277 "Viper" magnetic rail cannon was a prototype railgun developed for the United States Armed Forces.
==Background==
==Appearances==
This X277 "Viper" magnetic rail cannon is mentioned only in Fallout 3.
==References==
Category:Fallout 3 mentioned-only items
Category:West Tek technology
es:Cañón de raíl magnético X277 "Víbora"
ru:Электромагнитная рельсовая пушка X277 «Вайпер»