Sniper Rifle from Halo - based on the original concept art for the SRS99-AM.
It was created as a game-ready* asset: 21k triangles, 2k texture, texel density of ~10,24.
This model (base-mesh) is entirely non-destructive, created using the ND Blender Add-on: https://hugemenace.gumroad.com/l/nd-blender-addon
* As personal workflow/pipeline practice, this will not be used in an actual game, sold, or distributed.