It's not Lake City mind you, but Classic Arms has about the best deal going right now on .223 / 5.56 MM.
http://www.classicarms.us/1,000 rounds of M-193 for
$349.95 mounted on hermetically sealed stripper clips of 10 rounds each. Their website is one very long scroll. If you go about 2/3rds of the way down, you'll see it. They also have 1,000 rounds of M-855 loose boxed for
$424.95. It's manufactured by ADCOM in the U.A.E. Not exactly my favorite place in the world, but the price is fantastic. They even have a video of this ammo being shot in various weapons, and it shows it to be very clean, dependable, and accurate. I'm good at the moment on .223, but if I wasn't I would definitely jump on it. Bill T.