Good question crazycoot. I believe my Colt has what they refer to as the govt. profile barrel. It is the sporter target model. These barrels are a full pound lighter than a HBAR, but shoot very well despite the lighter barrel profile. With iron sights it shoots less than 1.5 moa consistently:
[Linked Image from i.imgur.com]
Good enough for plinking with.

When comparing it to my buddies HBAR, it is more lively off the bench, but is much lighter and feels more nimble when shooting from field positions, such as offhand. I prefer the lighter weight personally.
[Linked Image from i.imgur.com]

I've also seen these govt profile barrels on sale lately and am thinking about buying one for my A2 Upper receiver that is sitting idle..

Originally Posted by raybass
I try to stick with the basics, they do so well. Nothing fancy mind you, just plain jane will get it done with style.
Originally Posted by Pharmseller
You want to see an animal drop right now? Shoot him in the ear hole.

BSA MAGA