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.
I_C2_Ma_Shell_Twin_Howitzer_Illuminating.dat
GUID 58600f6dc7ba41a2bdfb114909f27c03
Type Magazine
Rarity Epic
ID 38496
Size_X 3
Size_Y 2
Size_Z 0.25
Amount 2
Calibers 1
Caliber_0 38494
Explosion 38444
Blueprints 1
Blueprint_0_Type Tool
Blueprint_0_Supplies 1
Blueprint_0_Supply_0_ID 38444
Blueprint_0_Supply_0_Amount 2
Blueprint_0_Build 30
InventoryAudio Sounds/Inventory/SmallMetal.asset