What the hades is milsim?

The only thing I can think of is military simulation. Is that it?

Are they special games for milsim or what? (What makes a milsim? (playa & game?))

You got it Ace, MILitary Simulation is using markers that look like real weapons and players that dress the part as well. I had that SP8, but I have never been that kind of person, I just wanted to try the look as far as weapons choice.
Fulda Gap is the place for mil-sim and there will be plenty of it there.
I do not go for the camo look as we all know and I think most of us are the same way, that is why we are Riot...

yeah im not all mil sim either.
not that theres anything wrong with it...We played against and with some funny as crap guys all mil simed out in tenn
its just an adjetive to classify some paintball stuff

Ill just ad some gear would be mil sim (in my mind) besides markers and clothing...the tactical mole vests...with all the attachments... drop packs...tactical slings...just to name a few
all the Swat or HRT lookin gear from Rap 4 or some of the other manufacturers stuff along those lines

even some rec games Id consider more "mil sim" like protect the VIP or rescue the hostages etc.
Yeah and (from what ive read and been told) some big games really push mil sim
for example ...at the combat classic they fire 50 cal machine guns (i think thats what they are) loaded with blanks at some points during play?