[ansel12]

I believe the AR-15 that I used in basic was under 6 pounds.

Here is a 5.5 pound Bushmaster.
http://www.bushmaster.com/catalog_carbon15_AZ-C15M4PRE.asp

The Bushmaster Lady comes in at under 4 pounds. There are so many AR-15 variations that I really don't know all the selections out there, it is so massively popular and favored that it would take a lot of research to see every model available.

[PugetSoundSoldier]

And the Sportical the original poster was asking about is over 6 pounds...

Seems you like to be picky, that’s fine...