Side mounted 3x zoom scope.
The item id for Lancer Scope in unturned is 3519. You can use this ID with the commands below to spawn the item, give it to a player or buy it on a modded economy server.
Size_X: 2
Size_Y: 1
Size_Z: 0.15
Spread: 0.9
Zoom: 3
Asset_Bundle_Version: 2