#G.41m

Now, based on the four previous articles on gun operating mechanisms, some of my readers may be thinking “jeeze, Nathaniel, we already know all this stuff! Why are you telling us this?” Don’t worry! I haven’t forgotten about you, and that’s why I am sprinkling in more advanced topics as we talk about the more basic ones. We just spoke about the principle of gas operation, so let’s jump up a grade to 201 level, and talk about two of the most conceptually obvious incarnations of gas operation. I’m writing, of course, about the Bang, and gas-trap methods of tapping propellant gases.