I will chime in 12 or 13 years later...
I think it is still relevant in certain, but not all applications.
CQB and urban warfare it is still relevant and functional.
To the poster who claims the AR platform is maybe 1/10th as reliable as the AK platform....
Are you speaking in terms of the M16 deployment to RVN w/o cleaning kits and with a change in ammunition?
Yes, horribly unreliable and very problematic - but that was 1960-something. Even my uncle, a combat vet (35th SPS Phan Rang AB) told me stories of guy coming back in from patrol with baling wire and duct tape holding their M16s together, and how they all prefered the M14...but that is 55 years ago, and I would say all of those teething issues have been worked out. I run my ARs and M16 hard....I train with them, I compete with them, and even do my semi-annual certification training with the sheriff's office...NOT a problem - that wasn't user induced.
I have used hot ammo in my Uzi, Brit (Hirtenberger) L7A1 +P+, at about 1500 FPS and it ramps up cyclic rate to about 1000 RPM!!!
That will cut someone in half - just my opinion.
And +P+ ammo may go through level IIIA soft armor, but in a .mil application, all the plates will be hard and rifle rated, as are mine and 9mm will not be an issue.
Be that as it may. if I was the bullet sponge or point man making dynamic entries with a team or cell, I really would not feel underarmed with an Uzi.