"$500 [in cocaine use] buys a new AR-15 rifle [for a Mexican cartel]" That calculation is a bit off. There are a few layers of transactions between the cartel

"$500 [in cocaine use] buys a new AR-15 rifle [for a Mexican cartel]" That calculation is a bit off. There are a few layers of transactions between the cartel supplier and the cocaine uses. These add markup. "every time they buy illegal drugs they reward the cartels" So, buy your weed local, direct from the farmer?