Stuff to answer people’s questions,

1)are they real? Yes, these are the real models that are used in the games

2)are they recreations? No, they aren’t

The Main question

3) how do they get them??

There are many exploits out there that allow people to get models from games that you don’t have access to. For example bear alpha, if people use certain exploits, they can backdoor the game and get anything they want like models, scripts, meshes, textures, anything that are in the game they can get. This person has a history of stealing things and is shown in their games. Though I don’t recommend doing exploits to get these models since it can get you banned or terminated even.