Concept Weapons Portfolio by Alex Penescu on ArtStation.
weapon_06, Vladimir Artykov on ArtStation at https://www.artstation.com/artwork/weapon_06
MiniPistol #1 by RemoteCrab131.deviantart.com on @deviantART
Sci-Fi Swords by Kalephrex
sci-fi concept weapon by gurmukh bhasin | 3D | CGSociety #gun #rifle
Equinox by Andrei Samardac
Concept Art Link Gun - Gooba
ArtStation - Unreal Tournament Weapons, Adam Wood
This is maybe one of the best looking gun concepts in my opinion. I like the way the slide looks, but the grips looks a bit forgotten.