First off... Welcome. Congrats on your purchase!
Please do not think i am being rude or hard on you.... However, after seeing some of your other posts on the subject I would say SLOW down friend! You just got your first gun last week, and now your ordering a PS90 and a 1911? Take your time! learn how to shoot with your first purchase. learn the gun, how to clean it, how to shoot it, and how to be responsible with it. It is a DEADLY weapon. Learn propper sight picture, propper grip, stance, ect, ect. Once you learn the basics you will be a more informed buyer for your next purchase.
If you are a new shooter, its important to learn the fundamentals. A basic safety course with experienced teachers is a good place to start. you may find (as cool looking as it is) that the PS90 is not for you. Not likely, because it is really cool, but its better to take your time and grow into these things IMO. You may even find down the road that you like other pistols better than the FNX. If you are new to the game, learn the basics first, everything else will take care of itself.
I will start you off with the 4 golden rules of firearms.
1. TREAT EVERY FIREARM AS IF IT WERE LOADED. Allways, Allways, Allways everytime you touch a firearm, even if you just unloaded it yourself, treat it as if it were loaded! this will become a habbit over time.
2. ALLWAYS KEEP THE MUZZEL PONTED IN A SAFE DIRECTION. My grandfather used to call the muzzel the "buisness end". Keep it pointed away from anything you don't want destroyed!
3.KEEP YOUR FINGER OFF THE TRIGGER. Always keep your finger off of the trigger untill you are aiming at your target and ready to shoot.
4.BE SURE OF YOUR TARGET AND WHAT IS BEYOND IT. Very important to pay close attention to what your shooting at and what is beyond. your bullets can richochet off of rocks, water and other obstacles, and can be potentialy dangerous to you and other in the area.
Again, not trying to put you down or deflate your confidence. We just don't want any extra holes where there should'nt be.
Have fun, and be safe!