Easy way to display weapon info while selling to the trader at outposts.
Not a whole lot to this trick, while you are at the trader go to the sell tab and then click on your Equipment tab. While in this menu, use the keybinding to open up the steam overlay while in game (default key is SHIFT+TAB), Then use the keybinding again to go back to the game. You will now be able to see the all the weapon information without having to scroll over the items.
You can also do this trick inside of your inventory while selecting or deciding on what items to drop while traveling, needing inventory space for new weapons.