Create MP mission and run it on dedicated.
Place RHS M1A1 tank. (I'm pretty sure that this can be replicated on arma3 vehicles too)
Get in gunner.
Test locality in console
vehicle player turretLocal [0]; -> true
local vehicle player; -> false (because it is local to server. If not, make it non local to you)
Execute:
vehicle player animateSource ["elev",0.006]
Check phase:
vehicle player animationSourcePhase "elev"; -> 0.00787402
Take Driver seat to change locality of vehicle to you or do it with with setOwner command.
Now
vehicle player turretLocal [0]; -> true
local vehicle player; -> true
Execute:
vehicle player animateSource ["elev",0.006]
Check phase:
vehicle player animationSourcePhase "elev"; -> 0.006