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.
AA12 Drum Slug.dat
GUID d0768fbd69f94bdbb86ef351c87c9c0d
Type Magazine
Rarity Rare
ID 58959
Size_X 2
Size_Y 2
Size_Z 0.3
Amount 20
Count_Min 3
Count_Max 19
Calibers 1
Caliber_0 56139
Spread 0.25
Shake 1
Recoil_X 1.1
Recoil_Y 1.2
Ballistic_Damage_Multiplier 4.8
Speed 0.65
Equipable_Movement_Speed_Multiplier 0.9
Pellets 1
Tracer 48
Explosion 55074
Explosive
Shell 55050
Blueprints 8
// 8 shells
Blueprint_0_Type Ammo
Blueprint_0_Supplies 1
Blueprint_0_Supply_0_ID 58238
Blueprint_0_Build 55048
// Saiga-12 mag
Blueprint_1_Type Ammo
Blueprint_1_Supplies 1
Blueprint_1_Supply_0_ID 58361
Blueprint_1_Supply_0_Critical
Blueprint_1_Build 55048
// 2 shells
Blueprint_2_Type Ammo
Blueprint_2_Supplies 1
Blueprint_2_Supply_0_ID 58239
Blueprint_2_Build 55048
// Saiga-12 8rnd mag
Blueprint_3_Type Ammo
Blueprint_3_Supplies 1
Blueprint_3_Supply_0_ID 58834
Blueprint_3_Supply_0_Critical
Blueprint_3_Build 55048
// 5 shells
Blueprint_4_Type Ammo
Blueprint_4_Supplies 1
Blueprint_4_Supply_0_ID 58951
Blueprint_4_Build 55048
// AA12 Mag
Blueprint_5_Type Ammo
Blueprint_5_Supplies 1
Blueprint_5_Supply_0_ID 58956
Blueprint_5_Supply_0_Critical
Blueprint_5_Build 55048
// AA12 Drum
Blueprint_6_Type Ammo
Blueprint_6_Supplies 1
Blueprint_6_Supply_0_ID 58959
Blueprint_6_Build 55048
// MAG-7 Mag
Blueprint_7_Type Ammo
Blueprint_7_Supplies 1
Blueprint_7_Supply_0_ID 59716
Blueprint_7_Supply_0_Critical
Blueprint_7_Build 55048