I know that the Sig Sauer Classic m400 and m400 enhanced have different gear on them etc but looking at the pictures they have different barrel contours. The barrels are supposedly the same lining, size, material etc but can anyone confirm that the barrels contours are actually different on the two or is it just the picture? the classic m400 looks like just a flat barrel while the enhanced looks contoured (or whatever the word is) near the end of the barrel.
Here is a picture of what im talking about
http://imgur.com/a/DafYr
Here is a picture of what im talking about
http://imgur.com/a/DafYr
