Good thing you weren't this guy.
Expensive new Russian AK can't feed reliably.

Could have been embarrassing to have those AR guys see an AK fail to operate.

it's not the gun, it's the user.

AR's will run if you're not stupid about the barrel/mag/ammo matchup.  The fact that there are a bazillion different combinations sometimes makes for bad combos.  Match 223 barrels, Wolf or 5.56 ammo, and USA mags are a "guaruntee" for a jammomatic.

AKs only have one combo: "run"
There is no such thing as match AK barrels with tighter chamberings, aftermarket junk mags (except for the new promags perhaps), and finiky ammo.  AKs have loose chambers that feed just about anything, the mags are ususally all milsurp steel or new milsurp poly, and the ammo is all factory loaded because it's cheaper to buy imported than to reload.

You have to be smart enough to put the right combo together.

The funniest junkyard dog story I have from a range was with an AR actually. I had just finished helping my brother put together a South American reimport M16 kit on a Bushy reciever, went to the local rifle range to make sure everything was workign correctly. The range was busy and the onlu open spot was next to a pair of wankers with uber expensive, bolt action, Eurotrash "sniper" rifles, Leupold scopes and all. This is a 100M range mind you. We set our target up at 25M and I zeroes the gun, then dumped about 200 rounds real quick to make sure everything was working, "sniper" dudes made several comments about how ugly the AR was, and why put so much effort into a gun that is inaccurate at best.  

Time comes to see what the rifle could do at a hundred yards.  We moved our target stand out to the berm, and I started firing slowly taking my time, using nothing but the A2 sites, fired about 30 rounds this way. After I got done my bro and I lit up smokes and waited for the range to go cold, and watched the "snipers" at work. They had a spotter scope and one would fire his "tactical" wonder the other would spot him, give him corrections, the firer would mess with the whorly gigs on his scope that I couldn't afford, then he would fire again. This continued for about three days (okay it was more like thirty minutes, but it seemed like three days). Finally the range goes cold, and as my bro and I walked out to the target I had fired at the "snipers" made more nasty comments, one of them actually said "look at thier target, then ours and you will see why our rigs are three grand and his came from a garage sale. His buddy replied "maybe if he took a few seconds to aim between shots he would get on paper.

This is the point where we get to the target stands, and things get funny. "Sniper" one had managed to get a six onch group, "sniper" two had managed to get a pattern similar to a .410 at a hundred meters. "Sniper" two, who was the least braggardly, gawked at my target and asked me if I had quit aiming at the target after the first few or something. I told him no, that any decent marksman using decent ammo and a half decent rifle could put thirty rounds in a two and a half in circle. The "snipers" left shortly thereafter.

Uber cool gun just like the "real snipers" use = $3000

Box of match grade "sniper" ammo                  =$35

Being owned by a dude in a flannel shirt
with a $400 frankengun and winchester
Whitebox ammo                                                  =priceless

nothing.  and that's the point.