The M60A1E4 was a conceptual variant that explored using many distant managed weapons, like a 20mm gun as secondary armament. A mock-up of the style and design using the Type C turret was built. Israeli variants: Lots of the Israeli M60s have already been upgraded with more reactive or passive https://hoytmachineguns.com/product/m11-a1-atlanta-ga-380-acp-with-box/