How do I acquire night vision goggles in GTA Online?

To acquire night vision goggles in GTA Online, one must navigate to an in-game weapons shop known as Ammu-Nation. Once inside, find the gear section where various tactical accessories are available for purchase. Night vision goggles should be listed among the items; they can be bought and then equipped through the interaction menu under the 'Style' category and then 'Accessories.' It's important to note that some in-game items may require the player to reach a certain level or complete specific missions before they become available to purchase. Night vision goggles can also be sometimes acquired as part of certain heist gear setups, depending on the requirements of the mission.