FAQ

As explained in the movie, he mailed the mask and gauntlet to a P.O. Box. However, a mailman shows up at his house explaining that his payments for the P.O. Box were overdue and so the items were re-directed to his home address.

Likely an answer was filmed but got lost in the edit/reshoots. The most likely explanation is that when the Loonies are holed up at the motel, we see dozens of bikers are also frequenting the motel. The motor home can be seen parked there.

It's possible the bikers were gun runners and they stole their shipment. Alternatively, one of the group was in contact with a black market arms dealer and met with them to purchase the weapons.

Again, likely another plot point lost to re-writes and re-shoots. There was even an action figure released called the "Emissary Predator". It wore American army fatigues and carried an M249 machine gun. Beyond that, nothing more is known.

It takes place in 2018. 8 years after Predators.

Director and Co-Writer Shane Black has confirmed that the film will be an "inventive sequel" to the movie Predator (1987) and not a remake. To quote Black, "Why start over, when you've all this rich mythology yet to mine? "I like the idea of expanding and exploring the existing Predator mythology, rather than hitting the restart button." (Source) Essentially, the Predator franchise is an anthology series. Different characters in different locations instead of a continuous story focusing on the same people.