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.
IR_Victor_Ammo.dat
GUID 5ac0e29b65fd43faad2c29ec5c654b22
Type Magazine
Rarity Legendary
ID 15052
Size_X 1
Size_Y 1
Size_Z 0.1
Amount 5
Count_Min 2
Count_Max 4
Calibers 1
Caliber_0 283
Tracer 51
Blueprints 2
Blueprint_0_Type Ammo
Blueprint_0_Supplies 1
Blueprint_0_Supply_0_ID 1192
Blueprint_0_Build 30
Blueprint_1_Type Ammo
Blueprint_1_Supplies 1
Blueprint_1_Supply_0_ID 15052
Blueprint_1_Build 30