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_GROM_Nades.dat
GUID 11f50f51376445778e1d72168d860b91
Type Magazine
Rarity Legendary
ID 10553
Ballistic_Damage_Multiplier 0.05
Size_X 2
Size_Y 2
Size_Z 0.245
Amount 6
Count_Min 1
Count_Max 6
Calibers 1
Caliber_0 10552
Tracer 19030
Blueprints 3
Blueprint_0_Type Tool
Blueprint_0_Supplies 1
Blueprint_0_Supply_0_ID 18999
Blueprint_0_Supply_0_Amount 1
Blueprint_0_Tool 18999
Blueprint_0_Tool_Critical
Blueprint_0_Build 27
Blueprint_1_Type Ammo
Blueprint_1_Supplies 1
Blueprint_1_Supply_0_ID 10553
Blueprint_1_Build 30
Blueprint_2_Type Tool
Blueprint_2_Supplies 1
Blueprint_2_Supply_0_ID 10604
Blueprint_2_Supply_0_Amount 6
Blueprint_2_Build 30
Delete_Empty
Range 9
Player_Damage 75
Zombie_Damage 100
Animal_Damage 100
Barricade_Damage 50
Structure_Damage 50
Vehicle_Damage 350
Resource_Damage 500
Object_Damage 250
Explosion 19048
Explosive
Explosion_Launch_Speed 15