Earlier quoted context omitted.
When were you a child? In the late eightees, I happily played with Lego that had grey swords for knights in grey castles, and pirate themed stuff with brown guns, and cannons that were grey and brown. Lots of green base plates, too.
I assume it was the 70s. During the 80s, Lego included more and more green, brown, and especially grey, and also more and more weapons. First swords and spears for the knights, later muskets for the Pirate theme, and then blasters for Star Wars. They still don't like modern weaponry, though. I'm not sure if they have guns for their cops and robbers. The real military stuff comes from clones/competitors, not from Lego…
Yes this was the 70s. At the tail end of my time there were indeed knights with swords and (checks on google) halberds, and the Space theme guys had little doohickeys that were presumably meant to be ray guns - at least that was how we used them. With hindsight one could see that this was the thin end of a wedge, but contemporary weapons like guns and cannons would still have been very off-message.