You can also get from Amazon, DNZ and I believe another company, but can't think of name, the slide's rear plate that's lazer etched with many different sayings, logos, animals, and custom words for less than $20.

It's also made of alloy metal instead of factory plastic, too.

You can also do the M&P TruGlo optic sights or go with the trinimum for a glow in dark sight.