Makes me think a little of the movie The Game.
I can't wait to do this. I'm going to get the sniper rifle nerf gun and some camo and pwn some niggas.
The sniper rifle nerf gun has an effective range of maybe 10 meters. I recommend the pistol, it fires faster and has the same effective range. Plus, I find it easier to aim (though that might just be because I used it more).
And I don't know about camo, unless you're expecting them to be wandering through wilderness. But camo doesn't work in urban/suburban areas very well. May I suggest a fake beard and an overcoat?