We just got approved/issued 10.5" uppers for our M4s for use on some missions; here is mine.
The specs are:
Colt upper and lower.
KAC quad rail.
KAC vertical foregrip
Surefire 900 series flashlight.
C.Q.D. Single-point sling attachment point (I don't use it).
C.Q.D. Front sling attachment point.
Mag-Cinch mag clamp (I know it's hard to see under the 100mph tape, but it's there...)
The EOTech sits on a GG&G throw-lever mount, that sits on a LaRue Tactical riser.
VTAC two-point sling.