Lance,
My experience with Airsoft has only begun this year in training. I have used other sim training but hearing beeps really doesnt keep you on your toes. Paintball is the only time i really didnt want to get hit at close range and it kept me on my toes..who do you buy the Airsoft from? Can you tell me what are choice weapons for you? Price ranges? Sorry. you offered for us to pick your brain so i am going to be asking questions about Airsoft..i see many cheaply made ones that would be a start but i have not purchased (yet) an airsoft...give me your advice..thanks 
No problem at all! I'm always happy to help someone out with Airsoft for training.
If you want to do handgun training then you should expect to pay up to $150 for a decent gun (you may get one for $120 if you look around.) You need a gas gun that will cycle like a real firearm, stay open on the last round, then you put in a new mag (with BB's and gas) and drop the slide and continue just like you would with a real gun.
The brand I usually recommend is KSC. I like KSC guns because one of the biggest problems with gas guns is that a cheap one will have mags that eventually leak. Leaky mags suck. KSC makes solid guns and mags that don't leak gas. I'd suggest you buy them direct from Japan, since it will be a lot cheaper than anywhere locally. I've had pretty good luck with these two places:
http://www.dentrinityshop.com/index_ie.jsp http://www.wgcshop.com/There is always a chance your gun won't get through customs, but these guys sell a lot of guns and they don't usually run into problems. I've bought lots of guns through them and never had a problem, and my friends have done fine also. The only problems I've heard about involve enormous orders (1000+ guns).
You can shop around in the U.S., but my advice is to avoid eBay. We've had some problems with eBay guns. You never know what they have done to them before you get them.
Some places will say "KSC Japan" and "KSC Korea" or some other place. Pay the extra 10 or 20 bucks and get "KSC Japan". They make cheap knock-offs in other countries, but they are never the same quality, always get the Japanese version and you won't be disappointed.
You'll want to use Green Gas in your gun. That will get a factory gun shooting roughly 300 FPS+ at room temperature. When it's below about 40 degrees F you will get less performance. On hot summer days you'll get better performance. Shoot .25g BB's of a decent quality (we usually use Excel brand). They sell mini red paintballs, but they make a mess of the gun--stick with hard plastic.
Always wear a full face mask, especially at close quarters. I've shot people's teeth out with a factory rifle at 25 yards. These are not toys.
I try to get something as close to what I carry as possible. And get a couple spare mags for practicing mag changes.
Tokyo Marui makes the best AEG rifles, and some of the guys in my circle have bought their gas handguns. They make decent stuff, but I'm still more sold on KSC. KSC has an excellent line of Glocks. Their Glock 18 is fun, but the Hop-Up on it (the "Hop-Up" puts a back-spin on the BB to give it more range) tends to be permanently adjusted too high. I think if you went with a semi-auto only Glock from KSC you would be quite satisfied with it. A metal slide is a nice upgrade. The plastic slides used to break fairly often with Green Gas, but they have reinforced them recently so they stand up to the higher power gas now.
They have a lower power gas, but it doesn't cycle the gun as well, and they make a Red Gas which will blow your gun apart after a few rounds and will give you more velocity than you would want even at a good distance. We always use Green Gas, and I still have a mark on my arm from a hit I got almost a year ago. You'll know when you get hit.
If you are fighting at close range I highly recommend a pair of Hellstorm Navigunner gloves from Blackhawk Industries (
www.blackhawkindustries.com). They are kind of rubbery on the backs of the fingers, which seems to absorb BB impacts very well. We had one guy with no gloves get hit at point blank range on the nail bed and it turned his nail black for 2 months. Another guy was wearing the gloves mentioned above and took a point blank hit to the knuckle (that REALLY hurts) and it barely left a mark. It's counter-productive to seriously hurt yourself while learning to defend yourself.
If you have any more questions don't hesitate to ask. I've been at this for a while and I know most of the pitfalls. Used correctly I think you'll find it an excellent tool.
-Lance
www.desmoinesairsoft.comCheck the website to see all the guys and their guns (they look just like the real thing). We have a discussion forum also. We're always happy to help people out.
Oh, I almost forgot, I run an audio show formatted kind of like a talk radio show where my co-host and I talk about all kinds of Airsoft stuff. It's just packed with information, and you can download a show free and listen to it any time you like on an MP3 player. Or just listen to it on your PC. We update the show whenever we get the time (which varies). But it does have a lot of useful information in it. The website for the show is:
www.airsoftradio.com