I just split model for printing on compact 3D printer without supports.
Worked fine on my printer with little clean up. The hollow cylinder is for repairing the gun barrel if is breaks at the front.
Print Settings
Printer:
Ender 3 Pro
Rafts:
No
Supports:
No
Resolution:
0.24
Infill:
25%
Filament_brand:
3djake Eco PLA
Filament_color:
White
Filament_material:
PLA