Originally Posted by DrtyHarry
Yes, you do...and the proper tools are rather expensive.
If you have never installed sights before, I highly suggest having a gunsmith do it for you....especially on a beautiful pistol like your delta.
Well I have installed sights before however they were of the dovetail type on 1911's other than my Springer TRP. I know what you mean about the cost of sight tools all the way from 50 to a few hundred.