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.
20102_Anzio_Mag-Fed_20mm_Std_3rnd_Magazine.dat
GUID 582f726cfbff4265839f26b65b6b462e
Type Magazine
Rarity Mythical
ID 37771
Size_X 2
Size_Y 2
Size_Z 0.285
Amount 3
Count_Min 1
Count_Max 3
Equipable_Movement_Speed_Multiplier 1
Aim_Duration_Multiplier 1
Speed 1
Calibers 1
Caliber_0 35322
Range 6
Player_Damage 60
Zombie_Damage 150
Animal_Damage 60
Barricade_Damage 85
Structure_Damage 85
Vehicle_Damage 250
Resource_Damage 750
Object_Damage 750
Explosion 53
Explosive
Tracer 55
Blueprints 3
Blueprint_0_Type Ammo
Blueprint_0_Supplies 1
Blueprint_0_Supply_0_ID 1193
Blueprint_0_Build 30
Blueprint_1_Type Ammo
Blueprint_1_Supplies 1
Blueprint_1_Supply_0_ID 37773
Blueprint_1_Build 30
Blueprint_2_Type Ammo
Blueprint_2_Supplies 1
Blueprint_2_Supply_0_ID 37771
Blueprint_2_Build 30
Use_Auto_Icon_Measurements False