Hi all. I bought a RRA Operator II a year or so ago and it shoots well. That said it is heavy! It has a 16 inch HBAR style barrel on it and that definitely adds to its weight. I would like to lighten it up. It has a mid length free float quad rail hand guard that I would like to replace with something slimmer and lighter as well as replace the bulky flip up sight gas block with a low profile block. Any suggestions on a lighter free float handguard? Carbon fiber maybe? Suggestions on a low profile gas block are also welcome. Also does anyone know how to remove my current hand guard ?