Ultralight - JE Machine Tech AR-15 Pistol Buffer Tube, Skeletonized

If you’re building a super light AR, I’d recommend this or one of the JE Machine’s skeletonized buffer tubes. Unless you have the money to spend on carbon fiber tubes, this is probably the lightest you will find. It also looks good. And in some cases it’s just as light as carbon fiber. It only weighs 3 oz according to my scale.