the info on brownings web page implies 2 mags:
Features - Extra magazine
as for sights its a matter of personal taste. i dont like adjustable sights more parts to break and they get snagged.
if i was going to buy a 9mm it would be a cz75. even tho john browning designed the hi-power the cz75 is a better pistol.
"Gun control: The theory that a woman found dead in an alley, raped and strangled with her panty hose, is somehow morally superior to a woman explaining to police how her attacker got that fatal bullet wound." L. Neil Smith
The problem with being stupid is you cannot simply decide to stop doing dumb things...
"I crapped my pants to avoid the draft!!" -Ted Nugent