Hi guys, I've searched on the forums for good technical books but I haven't found what I was expecting. Is there any good book that covers all types of systems/mechanisms/constructive types for guns? I want some books that cover all mechanisms of a gun (trigger mechanism, bolt lock mechanism, delay blowback mechanism, ...) and for each mechanism show all existing types. For example, for the bolt (head) to lock to the barrel there are rotative bolts, tilting bolts, roller bolts... Probably won't exist A book for this, but maybe a collection of books or encyclopedia. I'm a mechanical engineer, and I have a great passion for guns since I was a kid. What I want is a reference book to study the mechanisms, how everything works and etc. I know that internet is a good source and I've learnt a lot with it, but as you have to search each theme independently, everything is separated, with no logical structure to approach the whole theme. Thanks P.s.: I'm from Brazil, and the gun's law here is ridiculously rigid. Our culture is to be afraid of guns. Talking about weapons here is tabu, if you do, people think you are some kind of wacco. Our magazines is ridiculously bad and misleading! There is no way I can found a descent literature on guns here. P.s.2: sorry, but I couldn't find and appropriated section to create this thread.