Sadly, there is no lock on, but it can shoot quite fast, and after a bit of practice can be done quite easily.
The model included is modeled after the Maverick missile used in the US military, made by me Picolini.
How to shoot:
Press H (horn) to fire the missiles
*A special note while shooting!
You can hold down the shoot button for the missiles to stream out contiuously, although this is not the best thing to do. It can lead to premature explosions, and even the game crashing, so be careful.
Another bug would be it not damaging the plane a lot when you hit it directly on it's rear. I don't know how to fix this, or the others. Sorry.