very jealous you getting them for that good of a price.
not technically my purchase but on the topic of 5.56 ammo, my stepdad just bought a new ar from a company our friend works at. monolithic mega arms reciever, geiselle match trigger, 16" carbon wrapped barrel, leo scope, magpul stock, adjustable brake, thing is bad ass. we also picked up a 16" carbon wrapped barrel, weighs in at about 1.5 pounds.