This item is not included in any spawn asset, but it doesn't necessarily mean that it doesn't spawn naturally on any of the maps.
PS_MGL_Nades_HE.dat
GUID 0b3c607f2bae444b86e3d935c4d662d2
Type Magazine
Rarity Legendary
ID 59390
Ballistic_Damage_Multiplier 0.05
Size_X 2
Size_Y 2
Size_Z 0.255
Amount 6
Count_Min 3
Count_Max 6
Calibers 1
Caliber_0 59389
Tracer 59030
Blueprints 2
Blueprint_0_Type Tool
Blueprint_0_Searchable False
Blueprint_0_Supplies 1
Blueprint_0_Supply_0_ID 58999
Blueprint_0_Supply_0_Amount 1
Blueprint_0_Tool 58999
Blueprint_0_Tool_Critical
Blueprint_0_Build 27
Blueprint_1_Type Ammo
Blueprint_1_Supplies 1
Blueprint_1_Supply_0_ID 59390
Blueprint_1_Build 30
Delete_Empty
Range 9
Player_Damage 100
Zombie_Damage 200
Animal_Damage 200
Barricade_Damage 67
Structure_Damage 67
Vehicle_Damage 700
Resource_Damage 1000
Object_Damage 500
Explosion 59027
Explosive
Explosion_Launch_Speed 15