ar15 20" barrel and iron sights?

[Aagj]

ive been getting into coyote hunting and have decided to buy a smaller caliber than my 30-06 and am determined to get an ar15. I was looking at the S&W M&P15 sport, but am trying to find an ar15 below 900 that has a 18" or 20" barrel with iron sights. Have any of you seen anything like that?

 

[LAhunter17]

Try PSA. I have bought from them before and their stuff is good.
Ammunition, Magazines, Rifle Parts, Bulk Ammo and Rifle Accessories - Palmetto State Armory

 

[threejones]

Midway shows a couple in your price range. If you assemble your own lower, it'll save ya a few bucks too.