This is a used barrel for the British Lee Enfield in .303 British.  From the markings it appear to have been a commercial import.  The barrel is in good condition with minor wear on the finish.  There are spots where pitting is evident.  The bore is good with solid rifling but there are some minor signs of pitting.  The bore is a bit dark but could clean up nicely.

The barrel is 25 1/8 inch long.  Barrel is marked:

NP 303 2.22

18.5 TONS