Ricky!! No worries about the questions man! Keep firing away till we get this one solved!:)

Okay, so for the shoot, I actually used a Boss ME-50 multi-fx unit. For all the lessons on the site, I'll use my Line6 POD-XT, and for anything I have to footswitch in and out I'll use the Boss. So I just dialed up their flanger patch and turned all the knobs clockwise and I thought that sounded cool, so I went with it.

The reason I suggested the Vortex was that I had just come across it online, and it seemed to fit the bill for what you were looking for. I do NOT have any first hand experience with the unit. I did a little more digging and checked out some youtube vids on the unit (there's even one with Steve Stevens himself, although he sadly didn't attempt to get the machine gun effect in the vid). The controls seem very flexible and I'm confident you could get what you were going for with it.

That being said ... the biggest piece of advice I can give you is to TRY BEFORE YOU BUY if at all possible!! Try out any of the flanger pedals you're music shop has in stock. See if you can replicate the effect. Be sure to also set your tone for Heavy Crunch while you are testing the pedals, because that affects the sound as well. Also pick the brain of any guitarist salespeople at the store and get their opinion as well. They may be hip to a pedal that I am not.

The MXR pedal you are talking about seems cool, but I checked out the video and there's one section where they appear to have the controls set pretty high and it still sounded mellow, so maybe that might not be the one.

If you end up purchasing online, most online retailers allow you a full 30 day return policy if you are unsatisfied. So that may be one way to try something out for awhile, and have the option to send it back if you're not happy with it.

Hope this helps my man!! I wish I could just definitively tell you "THIS IS THE PEDAL", but unfortunately I cannot. What I can tell you is that I just fired up my POD-XT and scrolled through a bunch of flanger effects, and was able to replicate the machine gun effect on most of them (some sounded cooler than others, but they were all in the ballpark). So this leads me to believe that you should be able to dial in what you are looking for on most flanger pedals out there.

Keep searching and I know you'll find something.

Keep me posted!
Mike