The arms dealer is asked for "Mossberg 870" shotguns. In fact, Mossberg has never made a model number "870" as all of their models are in the 500s. Remington Arms makes a Model 870 which is likely what the writers meant, but weren't able to use for some reason.
The soldiers in the jeep are both wearing uniforms that are not right, out of uniform. Neither one is wearing a tee shirt. The driver is wearing a patch that should be OD green. Then they are wearing different types of BDUs. They should be the same.
When Guerrero drives off after acquiring the cluster bombs from Stiles, the headlights of his Maserati are reflected in the camera lens.
There is an obvious edit when Crockett attempts to catch the sea plane with his speed boat. What was meant to appear as a single action sequence reveals that the plane and boat were filmed at different times and spliced together.
Shaney (the blackmailer) is shown taking photos from a motel window which is shown being bathed by the lights of a blinking neon sign. However, when the photo s are shown being taken there's no neon flash shown in the camera's field of vision as there should be.
Crockett and Gina both put their hands on the processed negatives hanging in the darkroom, adding their fingerprints to the film.
In the beginning of this episode Guerreros henchman fires a weapon with suppressor attached but pretty normal gunshot sound is heard, a few moments later Guerrero shoots the girl with same gun and suppressed sound is heard.