I will get a picture it looks like the end might wrap all the way over the end? It has a strange looking "seam" maybe. Looking right at the end it looks unlined. But when you look at the side of the muzzle it looks like it might have some seam that is finely joined? I really like the notch in the original sight. It is so fine I think i could do better with that sight. But the weather is supposed to be great this weekend so i will see.