I'd recommend BCM or for slightly less an Aero Precision.
If you're wanting better Daniel Defense.
Really comes down to what you want to pay for. Upgrades cost extra and the parts removed are spares or sold at a loss, so upgrading everything makes a poor purchase overall.
Building exactly what you want is probably dollar for dollar your best bet.
“You never need fear a man, no matter what his size. When danger threatens, call on me, and I will equalize.”
Samuel Colt.
�Common sense is genius dressed up in work clothes.� - Ralph Waldo Emerson
| 
