This is a 1911a1 surplus barrel, please see pictures for the markings on barrel, 45acp, 5", used, you can see the rifling in the bore, it is pretty clean, doesn't come with the link or the pin.There is a 3% credit card fee on the total, sales tax will be added for the state of Florida, money must be here within 5 days. All parts should be examined by a gunsmith before firing or installing them on your gun