Where can i get an acr airsoft gun?

i am looking to buy an acr airsoft gun, and i know that it is really called the magpul masada or something like that, and that it's made by a&k. i have heard that they have one for $400 or $500, and that they have another version that is about $200. so far the cheapest i can find it for is $280. i only want it new. and it has to be a link to a website or the email address of someone who sells them new. thanks