You do your sprint then on controller hit your right stick twice and should do it.I tried this and the only thing what my soldier did when using the Alternate soldier button layout, he only crouched even when my character was running and when i tapped crouch button twice while running. Plus the controller layout doesn't show any slide option when you look at the controller layout.
Can't you bind buttons on console in BFV's settings menu? There's also a new option in the controls menu to make slide a single button press, instead of two.
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