I got banned from M4 because I brought up this very subject. How a DPMS rifle will work just fine for most AR-shooters because they didn't need a rifle that would stand up to the rigors of warfare "in the sandbox". And Joe Citizen would be better served by saving his money on fancy accessories and tacticool shit and buying ammo to practice with.
Holy cow...what a shitstorm I got myself into.
I never realized that having the barrel parkerized under the FSB and black over blue extractor-spring insert was so freakin' important.

