So sorry if this has been posted before but the search function is not my friend today. So I am planning a trip to the Glock factory sometime in the next couple of weeks. Im trying to do some recon on it as its about 45 minutes or so each way. I bought a bnib G37 from a gunshop about a week ago and upon getting home, realized the mags were just not right. 1 would load fully but then wouldnt fit in the gun and the second wouldnt take all 10 rounds and even though it fit in the gun, wouldnt drop free. My buddy told me to take it up there and they would give me some new mags. Essentially my question is Im getting them to put their night sights on it, swap the mags, and take a look at my g39. The g39 is in perfect shape but since i did get it used, and i have to go over there anyway, i figure ill atleast get them to check it out to be sure. I know the NS are going to be $60, but will I need any more money for what iv described? Lol it does determine whether I wait 1-2 weeks or 2-4 weeks. Never been and am really looking forward to it. Any of the experts advice would be appreciated.