puts out the same volume of fire as 20 M16A2.  Lighter than the old M60 and uses the same round as the M16.  The kicker is the cyclic rate of fire is 750 RPM.  They give you 200 round drums.  you can split that into 2 100 round asaualt packs.  Basic load for an Automatic Riflemen is 600 rounds.  When you use it in the light machine gun role it gets bumped to 1000.  the weapon wieghs 17 pounds + 7 pounds for spare barrlel bag + 7 pounds per 200 round drum + 4 pounds for the starlight scope (not including the hard plastic case.  by the time you add a 30 pound body armor vest w/ plates and all your web gear it adds up to a lot just under 100lbs o' crap.  That is with out your rucksack.  Never really added it up before guess that is why the guys with the M16 always beat me up the hills.