Yes it is. You parboil them first to make them juicy and tender, then BBQ them, just until the sauce gets a little brown and crispy. You don’t have to leave them on the grill so long that they get dry and tough.
I make my own Bar b Que Ribs and sauce. I will match them against any body else's and will rarely come in second place. They are tender, flavorfull and not dry.
That’s the way I’ve always fixed ribs. Mmmmmm good.