The SR-1 Semi-Automatic Portable Railgun is a field augmented circular bore plasma armature railgun capable of firing 6x19mm conductive armatures as well as Teflon-plasma armatures. The dual ZVS flyback drivers consume close to one kilowatt and are capable of charging the capacitor bank to 500V in less than 30 seconds. The SR-1 can be fired in single shot mode, or in semi-automatic mode. Capacitor bank stores 4.5 kilojoules of high voltage energy at 500V, and the structure is made from mostly 3D printed components. The entire system weighs less than 30lbs and is capable of firing 1 round every 15 seconds at 70% power and 1 round per 30 seconds at full power. This video discusses the construction and operation of the SR-1 semi-automatic portable railgun, and provides a brief introduction on its systems. Training in the Fire by Twin Musicom is licensed under a Creative Commons Attribution license (https://creativecommons.org/licenses/by/4.0/) Artist: http://www.twinmusicom.org/ Future Gladiator by Kevin MacLeod is licensed under a Creative Commons Attribution license (https://creativecommons.org/licenses/by/4.0/) Source: http://incompetech.com/music/royalty-free/index.html?isrc=USUAN1200051 Artist: http://incompetech.com/ ... https://www.youtube.com/watch?v=FILJznSr6fs