For jorge and others who seem to be unfamiliar with the Winchester Model 70 African and Safari, they all come with iron sights. The later models (prior to Winchester shutdown in 2006) came with a nice NECG adjustable rear leaf and hooded front sight.
Unfortunately, the comb on the Model 70 is too high and thick for iron sights, being straight for scope sights.
The pre-64 stocks were a little better, and most actions in all calibers were drilled and tapped for aperture sights like the Lyman and Redfield.
I find it curious that some people are so fixated on Mauser controlled round bolt actions for dangerous game, yet don't have iron sights on their rifles, or are not competent enough with them to have any confidence in using them, even at relatively close ranges under 100 yards.
