Cost effective - Elite Tactical Systems S&W M&P 9mm 40 Rounds Pistol Magazine

Great price. I would take ETS mags over Korean 30 rounders or Promag garbage. That being said ETS magazines are also not what you would probably want in a real confrontation. But for a range practice these mags have run surprisingly well. I have yet to have any hiccups while running them. They do not have metal feed lips so I'm pretty sure that the feed lips will wear over time. And even just loading this up you can see the feed lips stretch further and further apart as they have more tension. I was only able to get 38 rounds of 9 in this magazine. I may have been able to use a hydraulic press to get the last 2 in there but I was worried I'd either blow out the base plate or the feed lips so 38 it is. Still with 38 it cycled flawlessly.