Test out the concept first, and see if it helps do what you want. Buy a used rear M16 pistol grip and attach a radiator hose clamp to it so it forms a loop big enough to fit over the front sight tower, and then slide it back and tighten the assembly to your handguard. I cut slots through the top of the grip for the hose clamp on both sides by drilling a row of small holes and then cutting/filing away the inbetween material until I have a slot.
This hose clamp assembly works better if the original round plastic handguards are still on the gun. If not, you might want to put some padding around where the hose clamp will tighten around your forend, or run a piece of black shrink tubing around the clamp prior to attaching it to the forend.
In this way you can experiment with 6 o'clock position vs 5:30, etc., forward vs back, angled back vs forward (Romanian AK style).
If any of this helps you shoot better--great. Then you can put a dollar value on the degree of improvement and go for it. Remember, you usually get what you pay for.
Oh, and if this or any other form of forward pistol grip helps you "remember what direction you gun is pointing in the dark", I suggest you sell your rifle and invest in a good alarm system or an attack dog.
ColdBlue sends...