I don't think we've ever seen that kind of thing in canon star wars ships. I mean, the Falcon had nothing but Han and Chewie with their blasters to fend off the Mynocks and the Death Star, that wondrous technological monstrosity, was defended by manned turrets not auto guns.
I think what some people forget is that unlike other sci-fi settings where everything is futuristic Star Wars was purposefully built on anachronisms, sure these ships fly in space but they're basically WWII era fighter planes at their core and as such are missing futuristic tech you'd expect given the setting.