My first post here. Great site! I just purchased my first semi auto pistol... a Glock 20. To say I am impressed is an understatement! I love this thing! I have shot mostly revolvers and after one shooting session I am hooked on Glock's. Now to the Newbie questions. Are there any accessories that I should take a look at? This gun will be used for hd, so the first thing I am adding to it is Night Sight's. Thanks for any help or ideas you can give!