Does anyone know the minimum length of pull of the M-110 stock fully retracted? Is it the same as the A2 stock length?

The Hk video is worthless, they used a shorty 416 and a longer Colt. They also gave the 416 much more time to drain. They bring the 416 up to his shoulder and then gives it a second, while the M4 is fired almost the moment it hits his shoulder. How then do you explain the submerged test with the 14...

I'll take two.