Here is a very quick and dirty comp using a project from the DV Rebel's guide. So quick and dirty that I didn't even realize the AfterEffects project had sound with it. The project itself, with test muzzle flashes and a cartridge ejection is from the DVD included with the book. You'll notice that when shooting the footage I didn't even know what to focus on, so it's sort of focussed on my hand. I guess next time it should be the end of the gun. This was shot with the Canon 50mm wide open (f1.4) on a DVX. The whole shoot/composite/output took about an hour.