Excellent bcg - RISE Armament AR-15 Bolt Carrier Group (BCG)

I've never run an RA part in my AR-15s, but this BCG is excellent so far. I've got about 100 rounds through it, so not a ton to make any really scientific analysis, but after that 100 rounds, the BCG still looks brand new. No carbon is sticking to it at all. The nickel boron coating is very slick to the touch, and it only requires bare minimum lube. So far it's running and cycling exactly as I'd expect and then some. All the mil-spec features are there, but this goes beyond mil-spec b/c of the NB coating. The gas key is properly staked and the components are all right where they're supposed to be.