when you go to there page click on replacement barrels, then to long range hunter barrels. you can get a 45,50 or a .54 with the 1" flats,they come with williams sights.i also have a .54 and in the spring i am going to buy a new barrel for it..the barrels you were looking at are blanks.midway usa also sales these barrels and they are cheaper on there site.hope this helps!