This is an 8 round magazine for the Smith & Wesson M&P M2.0 Shield 9mm pistol.
Work just like they are supposed to. Great price!
The mags from the factory are chrome plated or polished to a shine. These aren’t. They are dull and when the mag release is pushed, they won’t fall freely. At all. I polished them by hand and got good results after 3-4 releases, then they stayed in the mag well again like when new. Don’t recommend.