The M60A1E4 was a conceptual variant that explored using various distant managed weapons, including a 20mm gun as secondary armament. A mock-up of this design and style utilizing the Type C turret was created. The next era had Increased night-preventing abilities and in most cases nuclear, Organic and chemical (NBC) https://hoytmachineguns.com/product/steyr-mpi-69-9x19-submachine-gun-smg/