Just finished this one today...
Here's what i used.
Double star lower,
Del-Ton 16" Chrome lined 1-9" heavy barrel,
Del-Ton Flat-top upper with "T" markings,
Phantom Flash hider, M4 handguards,
M4 style stock with CAA Cheek rest, SOG rubber buttpad,
Badger Ord Tac latch, A.R.M.S. #40 BUIS,
Bushnell Holosight (AA battery version)
This setup co-witnesses perfectly.
Havent shot it in this configuration yet, but im sure it will be
a honey to shoot....Might even become my car gun.
looks like a keeper