If you want to experience Call of Duty Beta, with what promises to be a fighting experience where you go out and kill enemies over and over again in 10 minute cycles, but are constantly plagued with bugs and glitches that ruin whatever experience it promised it could have been, goto Lion Claws. You'll get trigger time, but it'll be a mess, and you'll come away not entirely sure you had $600 worth of fun.
If you want to experience what it is like to be a soldier right as a war is coming to your doorstep: hiking to setup an OP, stalking behind enemy lines to ambush their supply routes, off-roading in a MUTT, a Deuce, a Gaz69, a BTR152, FV432 APC, and more... with the boredom of waiting for the enemy to make an appearance, adrenaline from getting shot at, the challenge of doing land navigation in unknown terrain miles from your supply with enemies around you, the fun of doing a night assault on a fixed enemy position when everyone is observing light discipline and using night vision goggles and rifle scopes. You'll get a less trigger time, but it'll immerse you and challenge you and you'll come out feeling like you actually achieved something.