Would having a different stock ALWAYS affect the numbers on the weapon xard or is it more of an internal thing?
Since you said “stock”, I’m assuming you are referring primarily to shotguns? According to the parts poster, Hyperion and Jakobs stocks boost accuracy while Tediore stocks reduce it. Bandit stocks supposedly do zip to anything, and Torgue stocks don’t have an effect on anything that shows up on the stats (lower recoil, slower recoil recovery). Check the parts guides (links to the posters and other stuff included):