Sorry Capote, I apologize. My issue is with polymer lowers and ATI accessories. I modded my post a bit. That Head Down upper and free float rail seem quality products.
To save a few ounces and make for a slicker look, I took off my Daniel Defense free float rail and replaced with the Troy Alpha VTAC, so if you are looking to save a few more ounces, that might be one place to look at. On the other hand, it is almost double the price of the Head Down rail you have already, so it would be an expensive few ounces!
I also love your Magpul CTR stock. I bought one in black when I had the DD rail on, and then another one in FDE when I switched to the Troy Alpha VTAC. (I am not that bright, but my credit card company loves me.) I even tried a mess of grips before I found one I liked. Tried the Hogue, Magpul MOE and then settled on the Magpul MIAD. (And, of course, had to get one in FDE and one in black in case I ever switch back to the DD rail.)
Yup. Hardtrailz said it best. ARs are legos for big boys.