I have an M16A2 flat-top carry handle from back before 911. I don't remember what the numeric designation was back then; but, it is a GI carry handle without sights shipped for $55.00. Be advised; back then, I could not get regular A2 sights to fit without troublesome alterations. You must use the carry handle-specific sights, normally marked O-2 to 600, I think. thanks jim.