I just tried the ShapeShift holster from alien gear and I have to say I like it a lot. It has two key parts from a hard polymer. One side contains the adjustable retention unit, and you secure the trigger guard of the system to this unit. I really like the comfort, retention adjustment, grip access, and concealment. I did have a minor potential issue with the size of the base but still solid. Draw is a bit slowr from an outside the waistband holster, where I did not have to pull up my shirt to access the gun. My M&P stayed put, yet was fast to draw on the range. Solid find I would suggest taking a look if your needing a holster. Any holsters you prefer or have tried? Curious how it stacks up!