That's what I would do also. My responses above were based on your questions.
What are your plans for this rifle? If you're going to leave it with open sights I'm not sure you will gain any noticeable accuracy from the FF tube. With a scope at longer yardage
You might see a small improvement. But will that be from the FF handgaurd or the better sight picture?
I have a scoped carbine with an A2 front sight and a Magpul handgaurd like yours that holds around 1-1/2 moa with the right load.
