hey dan, There are very Few Glock 18s in this country. None that I know of are in the hands of non-SOT civilians. There are some modified Glock 17s, but these are SOT guns also. I would be surprised to find anyone in executive protection carrying an 18.
Kodiac, I have been up and down this road, believe me. The thing is you HAVE to be a legitimate dealer to have an FFL, without and FFL, your SOT status is useless. FFL now means having a real business location, with real hours, etc,etc. Now, the ATF can't blame you for being a bad business person, but the days of getting an FFL and saying you'll work out of your living room or trunk are long gone.
I have seriously considered putting up a cinder block building on one corner of my property, getting a seperate address for it, use it as a "gunshop" open 1 day a week, or by appointment then do a lot of work over the internet. Then I could become an SOT, in order to do some business with the LEAs around here. That is over a $5000 investment before I buy the first piece of inventory. Add to that all of the headaches of running a business and you had better buy a lot of toys to justify the endeavor, which of course costs even more $$$$$.
It is *much* cheaper to just pay the $200 tax on the guns you can find, unless you plan on having a safe full of Class II/III stuff.