If you read the forum rules, you'll see you're actually in violation for requesting to purchase a gun outside of the 18+ AV want ad section. And no one will help you get a gun if you're not age-verified.
What I will tell you is that there's only 1 good quality MP7 on the markey, and that's the Tokyo Marui. And there's only 1 place to get it. And you have to be 18+ and age-verified to get it.