I'm going to send my barrel in this week for some trimming, and need to decide between M4 profile and Superlight.  Does anyone know the weight differences between the two, given 14.5" in length for either?

There used to be a post, long ago, in which someone measured the weight of the different types of barrels commonly used today.  Sure wish I could find it, so I wouldn't have to ask.

-Jim

Here's some info from Bushmaster JimGA.  IIRC, BM includes barrel nut, hand guards, etc. in the weights but I think this is a good chart for comparisons anyway.