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.
57_FN_P90_Std_Dual_50rnd_Magazine.dat
GUID 68a7435a555e4b45880cbce4eb4f2a88
Type Magazine
Rarity Legendary
ID 35755
Size_X 2
Size_Y 1
Size_Z 0.345
Amount 50
Count_Min 18
Count_Max 50
Equipable_Movement_Speed_Multiplier 1
Aim_Duration_Multiplier 1
Speed 1.4
Calibers 1
Caliber_0 35128
Tracer 48
Blueprints 7
Blueprint_0_Type Ammo
Blueprint_0_Supplies 1
Blueprint_0_Supply_0_ID 119
Blueprint_0_Build 30
Blueprint_1_Type Ammo
Blueprint_1_Supplies 1
Blueprint_1_Supply_0_ID 35015
Blueprint_1_Build 30
Blueprint_2_Type Ammo
Blueprint_2_Supplies 1
Blueprint_2_Supply_0_ID 36129
Blueprint_2_Build 30
Blueprint_3_Type Ammo
Blueprint_3_Supplies 1
Blueprint_3_Supply_0_ID 35754
Blueprint_3_Build 30
Blueprint_4_Type Ammo
Blueprint_4_Supplies 1
Blueprint_4_Supply_0_ID 35755
Blueprint_4_Build 30
Blueprint_5_Type Ammo
Blueprint_5_Supplies 1
Blueprint_5_Supply_0_ID 36760
Blueprint_5_Build 30
Blueprint_6_Type Ammo
Blueprint_6_Supplies 1
Blueprint_6_Supply_0_ID 37628
Blueprint_6_Build 30
Use_Auto_Icon_Measurements False