I'd aim a little higher than DPMS. PSA, for example. And the great thing is, with PSA you don't pay more.
If this were common knowledge the comspec ARs would be hurting. Fortunately for them there's no end to the low information buyers!
The biggest issue with assembling an AR isn't so much getting the parts together right - it's getting the right parts together.
US Army 1966-69, VFW Life Member, Retired Geek