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.
MP7 Mag.dat
GUID 253e0cd5051847ff9da035cdc7c502c6
Type Magazine
Rarity Rare
ID 58160
Size_X 1
Size_Y 2
Size_Z 0.3
Amount 20
Count_Min 5
Count_Max 20
Calibers 1
Caliber_0 56027
Spread 1.18
Shake 1
Recoil_X 1
Recoil_Y 0.7
Equipable_Movement_Speed_Multiplier 0.995
Tracer 48
Explosive
Explosion 55115
Blueprints 4
// Ammo Box
Blueprint_0_Type Ammo
Blueprint_0_Supplies 1
Blueprint_0_Supply_0_ID 58164
Blueprint_0_Build 55048
// MP7 20 rnd Mag
Blueprint_1_Type Ammo
Blueprint_1_Supplies 1
Blueprint_1_Supply_0_ID 58160
Blueprint_1_Build 55048
// MP7 30 rnd Mag
Blueprint_2_Type Ammo
Blueprint_2_Supplies 1
Blueprint_2_Supply_0_ID 58161
Blueprint_2_Supply_0_Critical
Blueprint_2_Build 55048
// MP7 40 rnd Mag
Blueprint_3_Type Ammo
Blueprint_3_Supplies 1
Blueprint_3_Supply_0_ID 58162
Blueprint_3_Supply_0_Critical
Blueprint_3_Build 55048