That's the fun part of it Glenn. You can customize the gun to fit your personality and also it's main purpose. Your 590a1 is a great choice since it is fit for almost any application. Be careful of weight the 590a1 can get heavy quickly!!I appreciate the welcome. I have got some really useful info from this forum so far. Man, it is so tempting to just add stuff to your gun. I must go search the forum. haha