Used CAR alum tube with new barrel nut (I replaced tube with std length but used old barrel nut). Tube does have blemishes from my attempts to remove it. Still round and useable. Used front sight with bayonet lug, sling loop, and front sight post. Includes pins for barrel but not for gas tube. Great condition for .750" diameter barrel. Used (very little) A2 handgrip without screw. Email for pic. $65 for all shipped to cont US.