Need info on some free/old ammo

[python357]

Today I was given about 100 rnds of ammo and I was wondering if anybody may have any info about it.
It's stamped C J 92 and is either .223 or 5.56. Obviously, it was made in 1992. But, CJ just doesn't ring any bells.

[DJ Niner]

Sounds like it's Norinco ammo, based on this (archived?) thread over at ARF.com:

http://www.ar15.com/lite/topic.html?b=3&f=16&t=169729&page=3

[Skintop911]

Free ammo of dubious origin may cost you much more than you think.