It depends on how your rifle is setup. Are you looking for the forward grip or hand stop to prevent accidentally grabbing too far forward and getting burned by a hot barrel or muzzle blast? They can be useful in that scenario. I have my weapon light mounted at the 6 O'Clock position to perform a similar function since the rail is a bit short. If you have a longer hand guard or rail, it really isn't necessary and is more for looks than function. I don't think a VG gives any better control than just grabbing the hand guard but that is just one man's opinion.