Draggable SelectionStart and SelectionEnd on WPF Slider?

Question

I have a slider in my application with IsSelectionEnabled set to true and SelectionStart and SelectionEnd bound to properties of my ViewModel. This is working perfectly and shows the selected area in blue with marker triangles over the tick marks.

Is there a way to have these marker triangles dragable so that the user can adjust the start and end of the selection area?

<Slider Value="{Binding Position}" Width="320" 
    Minimum="0" Maximum="{Binding Length}" 
    IsSelectionRangeEnabled="True"
    SelectionStart="{Binding SelectionStart}"
    SelectionEnd="{Binding SelectionEnd}"
    TickFrequency="10" TickPlacement="BottomRight" />