Skeletilized Side Fed M4 / M16 / MK18 Airsoft Upper Reciever 3D Printable Model

Skeletilized Side Fed M4 / M16 / MK18 Airsoft Upper Reciever is a 3D printable model, which we searched from web for you, so you can easily print on your own 3D printer or use print on demand 3d printing service. More 3D printer models from Mr.Banana are here.