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.
Guitar_Score_Christmas.dat
GUID 34aaf8b17b014967840423ca005ee70f
Type Magazine
ID 48120
Size_X 1
Size_Y 1
Size_Z 0.26
Amount 1
Count_Min 1
Count_Max 1
Calibers 1
Caliber_0 48102
Tracer 48120
Use_Auto_Icon_Measurements false