The one rifle every man should own. Having shot an original AR15 "preban" SP1, I never understood the fixation with the 16" length carbines. The 20" is a man's rifle. No one will be shooting a carbine length AR15 in an urban environment anytime soon, thus foregoing any advantage a 16" barrel generates. Do yourself a favor, buy a Colt AR15A4. It has less recoil, it has better accuracy, it handles better, it has better distance, and the 5.56 bullet was designed to be fired from an AR15 with a 20" length barrel. Colt is making some terrific firearms right now and their customer service is second to none. My only complaint is why they took so long to start making the ultimate rifle again? The fact that it's always sold out since its revival 4 years ago should speak volumes. Two thumbs up! While I will concede and admit my 16" carbines have their place, this is a far superior firearm and should be the AR15 style firearm everyone owns first. Thanks for reading this and enjoy your purchase! Keep feeding them, people.