That video doesn't accurately represent the "Speed Rock" technique at all. The Speed Rock was probably the first modern retention shooting position widely taught back in the 70's. It served as the foundation for most of the retention techniques that are used today.
It's worth noting that everything "new" owes its existence to something developed long ago, and if anyone thinks the wheel was invented in your lifetime then you're just a silly fool.
No it is not a perfect representation of the original.
For the life of me, I could not find a Cooper-esque speed rock vid in the short time I had to look. If you find one, by all means post it.
I particularly agree with your last paragraph.
Direct Impingement is the Fart Joke of military rifle operating systems. ⓒ
