I was just on aimsurplus.com They have spikes ar15 223 / 556 lowers for $69 shipped or 2+ for $64 each shipped. Didn't want yall to miss another steal of a deal!
http://www.aimsurplus.com/product.a...+(Cosmetic+Blemish)&groupid=301&search=spikes
http://www.aimsurplus.com/product.a...+(Cosmetic+Blemish)&groupid=301&search=spikes