Colt AR-15A3 AR-15 AR Rifle .223 Military/Police

To me, this AR is sort of like a classic guitar. No, not a valuable or particularly rare classic, but classic in the sense that is representative of a standard military/police configuration from a time when our government did not want us to own this sort of gun. However, I want to put a scope on it. And perhaps a bipod to make it easier for my daughter to shoot. Can I do that? Certainly! I can take off the handle and the iron sights and put on a new shroud/rail system. Its an AR, I can do anything I want with it. That's why we all love them.

However, my thinking is that there is somebody out there that wants this gun as it is. It would be like me taking a Fender Stratocaster from the 80s (not exactly rare or valuable) and routing out a spot to put in a humbucker pickup in it (forgive me if the guitar references do not resonate). It just seems wrong somehow. Yes, perhaps I am being crazy and attributing too much sentimental value to this rifle, but that is my thinking.

So by "more modern", I specifically mean an AR with an existing rail system and perhaps a decent reflex sight. Something whereby I would not have to take off an replace a bunch of parts on it. It would not have to be a one-for-one trade - we can work out something fair.

Also, I really don't know what this AR is worth. Had Hillary won, I am guessing it would have sold by now. But she did not, and I know AR prices have dropped as a result. Make me a fair offer.