Originally Posted by
8ball29
I understand what your saying however, the way I suggested isn't far off from building a complete rifle. If you order the BCM blem lower the only parts you usually replace are the stock, pistol grip, and the trigger (it comes with the Magpul enhanced trigger guard.) If you want to replace them, take them off in the parking lot of your local FFL...the wife will never know.
As for a bare bones upper, the only parts that you'd normally want to change are a fsb/gas block and a muzzle device. The BCG and the Charging handle are purchased separately so there's nothing to upgrade there.
All in all there's not much difference at all. If you chooses to go this route, order the blem lower first...pick it up from your FFL. Next up is the naked upper. The rest can be ordered part by part same as if you were to build. By the time you've completed your rifle the only things you will have replaced will likely be the A2 grip and the M4 Stock.