Walfas Weapons: Helsing(Metro 2033) by RED-IMPRISONER on DeviantArt
Crossbow Helsing (Metro Exodus) by Basalt312 on DeviantArt
A 100% homemade Metro 2033 themed air gun. Can fire darts and 6mm BBS...alu or plastic. Handpump determines power, trigger flips the lever of the ball-valve. : r/gaming