You shouldn't have this.
The item id for Kuwait Outlands Rocket in unturned is 5150. 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.
Useable: Gun
Slot: Primary
Magazine: 5151
Ammo_Min: 8
Ammo_Max: 8
Bursts: 8
Caliber: 5151
Range: 5
Explosion: 5273
Firerate: 2
Action: Rocket
Muzzle: 5255
Player_Damage: 5
Player_Leg_Multiplier: .5
Player_Arm_Multiplier: .5
Player_Spine_Multiplier: .5
Player_Skull_Multiplier: 1
Zombie_Damage: 250
Zombie_Leg_Multiplier: 1
Zombie_Arm_Multiplier: 1
Zombie_Spine_Multiplier: 1
Zombie_Skull_Multiplier: 1
Animal_Damage: 100
Animal_Leg_Multiplier: 0.6
Animal_Spine_Multiplier: 0.8
Animal_Skull_Multiplier: 1.1
Barricade_Damage: 0
Structure_Damage: 0
Vehicle_Damage: 0
Resource_Damage: 0
Object_Damage: 100
Spread_Aim: 0.1
Spread_Hip: 0.25
Ballistic_Steps: 0
Ballistic_Force: 2000
Ballistic_Travel: 0
Ballistic_Drop: 0
Infinite_Ammo: True
Allow_Magazine_Change: False
Fire_Delay_Seconds: .75
Reload_Time: 0.1
Turret: