James, the rear sight should be as easy as removing the old and replacing with the new one with maybe a slight touchup on the rear sight base in order for it to conform to the dovetail. You'll find that most sights are a bit oversize. I always recommend installing a dovetail front with night sights. The factory sights are staked in and not only require a special tool to install but the beating needed to stake in the sight can loosen the tritium insert. Most smiths would install the sights for you for around $25. Add $35 or so for cutting a front dovetail. George
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