Early in the film, Rostov goes to a cheap hotel to seal a cocaine deal. In one closeup, a Latina is snorting two thin lines of cocaine off a table top. In the next shot, she's snorting from a large pile of coke.
The rocket fired by an M72 LAW needs a minimum of 33 feet to arm. Hunter and Rostov are standing too close to each other to have the rocket do more than penetrate Rostov.