No, actually it has a knights armament or clone hand guard. Non free floating. Basically an A2 with flat top A3 upper receiver.
That said, the ACOG is a decent optic.
I shoot NRA /CMP High power and my A4 clone has a issue pic rail hand guard over a white oak free float tube.
With 75 or 80 grain long loaded bullets for 600 yds, it keeps them under a minute if I do my part. The leupold LPO certainly helps but I use irons as well for the mid range prone strings when required.
I have shot high power with numerous rifles -- service and scoped. As I recall the X-ring is 7". At 600 yards that's a little over 1 MOA. I've yet to hear any one who shoots all Xs. The 10 point bull is 13" which is slightly more than 2 MOA at 600 yards.
My sniping instructor often reminded us that 2 MOA in the field is realistic expectation.