I rented an M60 at a Knob Creek shoot 15-20 years ago. $40 for a belt of 50. I thought it was expensive at the time. I paid and got into a very short line.
The guy in front of me was with his girlfriend and I guess for her benefit, he shot it standing, offhand, Tommy-gun style. He didn't hit a target a single time and he was struggling to control it. We all stepped back thinking this dufus was going swing around and kill someone. The guy in charge of the gun stopped him and ordered him to lay down and use the bipod for the rest- at that point he had only a few rounds left which zipped into the woods.
My turn, I got comfortable on the ground and did 3-4 round bursts at a concrete-filled water heater tank that they placed at 100 yards. The sights were pretty much dead on and I "dusted" it and was able to see every pulverizing hit.
After my belt was done, I lifted it to know the weight and it was pretty heavy like I figured. On the trail back to the main area, my future wife teased me - "Impressive shooting. You think you're a badass now don't you?"