I'm starting my second Pedersoli Trade Gun build. The kit does come fully assembled, no need to drill the barrel pins. Patience is your most important tool. You don't need the Dremel. I cannot stress enough to do your homework and study original Indian Trade guns before starting. There are many excellent photos available on line. Trade guns didn't have a cut and dried rule of thumb as far as appearance, though they are similar. The beauty of the Pedersoli Trade Gun kit is that it is a great blank palette to built an authentic looking trade gun. The kit, as it comes, isn't "quite right" appearance-wise. No problem. The fun is in the personalization process of building "your own" trade gun. Check out some of my previous posts on my first Trade Gun build. You'll need some good files, four-in-hand rasp, a needle file set, quality sandpaper in various grits, gunsmith screwdrivers, some sharp wood chisels, rawhide mallet.