system
Given the following post, respond as if you're commenting on Reddit:
human
[MCU]Where are all the criminals using chiitauri tech?

So we know that Adrian Toomes made some money selling chiitauri tech since the attack in New York. We also know that there are vigilantes fighting crime in NY such as Daredevil or the Punisher. Finally we know that there is an evil criminal organisation called the Hand trying to rule New York.  
Why don't they buy the stuff made by Toomes Salvage Company? If I had to rob a bank, I'd rather use a gravity gun and a laser beam to get out as soon as possible since I don't want to meet that weird guy with a yellow glowing punch or the big black guy who doesn't care about getting shot.
gpt
Diamondback is selling the mob specialized bullets made from the alien alloy found in New York.

The issue is this shit is insanely expensive, so much so the government has it on pretty heavy lock down.