WTT M&P 40/357 Sig 15 round magazines for M&P 9mm 17 round magazines
I have up to four S&W 40/357 Sig 15 round magazines to trade for an equal number of 9mm S&W M&P magazines. S&W sent me the wrong magazines back during the rebate days and I didn't open them until now. I do not want to sell these as I still have an M&P .357 Sig.