I have saws with chain brakes, no brakes, and brakes that don't work. Hold on to the saw when you are cutting, and watch the tip like others have said. My worst ever kickback was when I pinched the top of the bar of a big saw and the rear handle got pushed back into my knee. That was an old 051 . I laid there on the ground about 2 hours before I decided to go home. For one, I could barely walk, and two, I didn't want anybody to know I had been crying. Others may chime in, but I doubt a " safety chain" would help in a push back kickback.