i'd avoid the barrel kings. they have a horrible reputation for customer service.$65 is an excellent price; thanks guys! I will order tonight. PSA had higher than normal prices leading up to black Friday, so I stopped looking.
ARBarrelkings.com had a similar price, but that was only for one labeled "300 AAC" BCG. AFAIK 300 AAC = .223/5.56 in the BCG area. I tried contacting them to get the details on the "300 AAC" BCG, but they never got back to me.