So I bought a slightly used M&P45 2 weeks ago. I got it home and found that the mag springs were bent in both mags. So I took a ride down to my LGS and showed them the mag springs were bent. They said they would order me replacements. So yesterday I get a call saying my mags were in. I head down there expecting to give them my two broken mags and get two replacements. I walk in and the guy runs in the back and grabs my mags. He hands me a bag with 3 brand new mags and says "Your all set". I ask "Don't you need the old ones?" He says "Nope, call S&W and get two new springs the old ones. Your all set." So I leave thinking SCORE. So I ended up with an M&P45 with 5 mags for $399 + tax. I love my LGS.
Good deal! It's good to hear that there are still some good ones left. The ones around here are all shitboxes. The response from them would have most likely been "that's the gamble in buying used," or that they can get new ones for about 40 bucks a piece.