Peter geared this towards the average gun guy, so some things are fairly simplistic. I think that Ron, Jerry, Myself, Pete and a few others caught most glaring mistakes
It is a three part, the 1st part (preWW1 and through WW1) is what they call a color, perfect bound - same for 2nd part (weimar and nazi) and last part will be post war era in B&W.
There are things I disagree with in how Peter did some things, but its his article and you have to remember the slant he is going towards.