If bought one of these for plinking with. It eats the cheap steel ammo all day long. I don't know if it will hold up as well as name brands but it works fine for my needs.
http://dynamicarmament.com/items/ar...-complete-upper-chrome-moly-m4-dti-detail.htm
http://dynamicarmament.com/items/ar...-complete-upper-chrome-moly-m4-dti-detail.htm