Update: Rockstar has given the world a release date and trailer for the gunrunning update. You'll be able to become Los Santos' next great evil mastermind (complete with underground lair!) on June 13.
Original story: GTA Online lets you be many types of criminal. You can be a street racer, tearing your expensive not-a-Lamborghini through the streets of Los Santos, or a mega-millionaire CEO Bond villain (complete with a lavish yacht and a limousine that has a turret gun) and much more. Come June, Rockstar plans to add another illegal activity to your GTA resume: gunrunning.
When the update arrives, you'll be able to discover hatches leading to underground bases where you'll conduct your illicit business. You'll be able to sell various arms for cash to some shady customers, but also outfit your own arsenal with new customization options. For instance, you can take that boring old roadster and turn it into a death machine worthy of being in a Mad Max movie.
Or acquire an amphibious APC with a damn missile launcher attached to the top.
Or just sit back, relax, and enjoy some target practice in your own evil lair.
Gunrunning: a thing you can soon do in video games.