Don't forget the clothing (uniform), pouches, holsters, etc.
At least have proper clothing to play airsoft.....going in with a t-shirt and jeans wouldn't be very smart and would leave you with some questionable bruises/marks. You could always just not have pouches/holsters if you decide to use a hi-cap and no pistol.
Ares M110 LEAF - Ares Striker Tan
TM G17 Pink - KJW P226 TwoTone