I just saw it.What a FREAKING COOL MOVIE!!!
let me get at the guns first.
WARNING SPOILERS AHEAD!!!!!
There's three mercenaries who are in the crew,at the beginning,they are field testing a Barret Light Fifty,loaded with HEAP rounds.The blow up an old plane with it.Another guy has a Steyr AUG,which never gets used,but it can be seen later at the crash site,with it's barrel bent,thus unusable.CS teargas is used,along with a flare launcher,and at the end,a brigade of Marines lands on the island.
Not too much gunplay though,but enough.
They lose all weaponry after crash,before crash you can hear the Barret firing a whole mag in the forest,before the guy gets eaten.Tons of dinosaurs,NON_STOP action,and it has some good story loops into the other films.I LOVED it,and I plan to see it again.The way the plan crashes is actually quite interesting.I am only telling you the gun-related stuff,so go see the film.It's got my thumbs up!