ProMag SW SD40 .40 S&W 15-Round Blue Steel

A: they will fit however work may be a different story around 75% of the promag mags that I bought would not work I do not buy them anymore

A: Hey Bryan, yes these would work. The factory magazines may be more reliable though. Hope this helps!

A: BRYAN, this will fit and lock in just fine Sir. Be sure and test any that you get for reliability as some Promags are less than "Stellar" performers.

A: Francis, unfortunately it is not Sir. Cheers and stay safe! You would need this magazine : https://www.budsgunshop.com/product_info.php/products_id/712009304/promag+sw+m%26p40+40sw+blued+15rd

A: Francis, no this will not fit your M&P 40. Here's a link to one that will fit if interested........ https://www.budsgunshop.com/product_info.php/products_id/89680/promag+smia11+m%26p+40+smith+%26+wesson+15+rd+black+finish....... Or here's a smith and Wesson brand Magazine that will also fit.......... https://www.budsgunshop.com/product_info.php/products_id/32912/smith+%26+wesson+15+round+black+magazine+for+m%26p+40s%26w+357+sig...... Hope this helps.

A: Francis, no it will not work, you want this one >>> https://www.budsgunshop.com/product_info.php/products_id/712009304/promag+sw+m%26p40+40sw+blued+15rd .....Have a great day!