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_Missile.dat
GUID 96b9229fdbad4b379a693962728d68cc
Type Magazine
Rarity Legendary
ID 38693
Size_X 3
Size_Y 2
Size_Z 0.25
Amount 2
Calibers 1
Caliber_0 38692
Blueprints 1
Blueprint_0_Type Tool
Blueprint_0_Supplies 1
Blueprint_0_Supply_0_ID 38788
Blueprint_0_Supply_0_Amount 2
Blueprint_0_Build 30
InventoryAudio Sounds/Inventory/SmallMetal.asset