Too small for duty - Holosun SCS MP2 1x9 mm 2 MOA Red Dot Sight for Smith & Wesson

Three month review: Nice optic with a crisp green dot. I didn't have any charging issues. The auto-dimming works well indoors and even when using a weapon-mounted light. It's easy to install and appears to be robust. It sits low on a M&P, and my suppressor-height sights are appear too tall in the window.
The optic is compact, with small glass and a bulky shell. It would be perfect for off-duty or concealed carry. However, I would not recommend it for duty when there are larger and more practical optics out there for the money. I'll likely replace this optic with a larger one.