I was kind of thrown at first as well. See if you can get Eric (my bad on Chris in earlier post) and he'll explain it better (the guy was great to work with, and i don't say that too often anymore). Basically, all they wanted from me was a reply on the emailed invoice stating that I do/did authorize a charge on Visa #### (only give the last 4) to Kneesek Guns for X number of HK UMP .45 25 round Magazines for the total of X dollars and cents (which includes shipping and handling). They showed up the following Monday, and I had to sign for them and was good to go! I have to admit though, I didn't order them through the web site. I got ahold of Eric and told him to hold 15-20 when the next batch came through. 2-3 weeks later he called and took my card by phone. There was a form (the one you were talking about) but that didn't display for some reason I told him >; ) nor do i have a fax, so that was why it went the way it did. I think they must have gotten bit on a few fraudulent C.C. transactions, which is why they want confirmation.
I was going to order 40 and sell the extra 20 for $70.00 apiece to fellow members (taking advantage of fellow enthusiasts because I can isn't my style. To each their own, and I'm not anyones' judge.....), but when I'd made up my mind 1-1/2 hours later, they were gone...... Maybe next time.