SolarGun system requirements state that you will need at least 4 GB of RAM. You will need at least 1 GB of free disk space to install SolarGun. To play SolarGun you will need a minimum CPU equivalent to an Intel Celeron G1820. However, the developers recommend a CPU greater or equal to an Intel Core i5-650 to play the game. Provided that you have at least an AMD Radeon R5 240 graphics card you can play the game. But, according to the developers the recommended graphics card is an AMD Radeon HD 7850.
SolarGun will run on PC system with Windows 7 64bits and upwards. Additionally it has Mac and Linux versions.