and actually grab his head. Altho I did mean it as a figure of speech, to show how silly the idea is of running to GET a gun, as vs merely having to make a 1/2 second draw of a gun you are WEARING.
What you do is get one hand on the back-top of his head, the other hand under his chin. Pull the rearward hand towards you and down. Thrust up and away from you with the near hand. His neck is strong against EITHER up or down OR rotational movment, but has no strength when the head is BOTH lifted AND twisted. This twist can be done either slowly enough to throw him without much risk of injury, or so swiftly that his spine is broken, and he collapses in your arms.
In 5 whole seconds, men run 50 yd dashes, did you know that? It takes about 1.5 seconds to cover the distance of nearly any room in a home. It takes maybe 1 more second to get past most people's blows and defense, and grab their head as above. If all I wanted to do was smash the guy, I could take 3 steps, launch a flying kick to the chest, cave in his ribcage-sternum, from 20 ft away, in less than 2 seconds. No, I'm not kidding, and any real black belt in a jumpkicking style can prove this to you. Some can do it in 1.5 seconds, too. From 10 ft away (the statistical outside range of justifiable civilian self defense) it can be done in less than one second flat. You only need one step, and the great masters can do this kick from 10 ft away, while taking no steps at all.
It's just a question of having a leg that's 3 ft long, and being able to standing broadjump 7 ft. The top men can standing broadjump 9 ft. Did you know that? :-)