There are multiple locations in GTA 5 where you can find Assault Shotgun. We marked some of them on the map bellow and we have screenshots for each location as well as this weapon’s stats.
Available Weapon Upgrades
|Suppressor||Silencer. It reduces range and damage||$1,837|
|Army ||Desert sand color||$100|
|Black ||Black color||Default|
|LSPD ||Metallic blue color||$600|
Assault Shotgun Location Screenshots