[wrench]

Looks like you found a rear sight somewhere.

Now get a red dot for it. They are great at normal carbine range shooting.

Oh, and you did not buy an AR15, you bought “your first AR15”.

[usconservative]

Oh, and you did not buy an AR15, you bought “your first AR15”.

Spot on! They're like potato chips: you can't have just one!

This is one of mine, although I have a green dot scope and a bipod on mine:

[Drew68]

Looks like you found a rear sight somewhere.

Yep. I didn't feel like researching optics so I bought an obscenely overpriced Magpul flip-up sight just to have something on the rifle.