This is one of the weapons I have been making for the game Raider Grind, a fast FPS taking place in a potential future.
The HVR is a handheld railgun shooting metal projectiles at a very high velocity using a powerful magnetic field. This is the main sniper rifle of the game (equivalent to the Railgun in Quake series).
Modeled in Blender using many railguns and Sci-Fi guns designs as inspiration. Textured and rendered in Substance Painter. This is the game ready asset (low poly around 13k tris).
Raider grind's Discord: https://discord.gg/HZ2E9tv