got a guy who offered me this: "I have a LNIB pristine Glock17 that I will trade. Gen3 July‘03 w/ PT Night Sights, Stainless Guide Rod/17 lb, 2 Glock Mags, Clam Shell & all Factory stuff. 1 3/4” 5 rnd groups @15yds on Sand Bag, 500 flawless rnds. Valued @ $575" i know nothing about glocks, and i'm kinda reluctant seeing as i already have an HK in 9mm, and they're pretty much the same. how hard would it be for me to sell it if i wanted something different? thanks.