OldmanFCSA wrote:Are you building an AR-10 or a LR308 ?
I guess it is best called an "AR308". The Aero Precision M5E1 upper and lower is DPMS based. DPMS 'high' profile rail. Almost all of the components I ended up going with are from or made by Aero, with the exception of the 'add-on' stuff like stock, grip, muzzle device. So I am confident it is all meant to work together. Even the barrel is made by Ballistic Advantage which is owned by Aero and makes all their barrels.
BB