The first AR-15 scopes marketed by Colt were actually leftover AR-10 models made by Delft Optics in Holland. These were known as the “TTL-80” 3X25, supplied in a Colt/Armalite marked carrying handle mount(part no.62215).
The more common Colt marked 3X25, and later 4X25, were made by Realist in Japan.
Early scopes had an inverted-post reticle, later scope had a standard post.
The Delta HBAR 3-9X were Tasco, the 10X42 looked like a Tasco to me.
I agree with John, the C-More look like Hakko.
While Kodak developed sights for the M-16 I don’t think Colt ever marketed them.