I am considering an upper for a lightweight build. I think the weight differnece between the two barrels (16") is about 4 ounces or so. Can anyone that has handled both tell me if there is any noticable difference in the weight (given that it is all forward)? Also, would the M4 barrel retain its accuracy better in rapid fire, even though it is light under the handguards?
There must be a reason government profile barrels are heavier forward of the FSB, but I am not sure what it is.