Save your money - XS Sight Systems DXW Standard Dot Sight - S&W

Was installing front post using a proper sight pusher. Tried backing it out after noticing it was shearing material off in the dovetail groove after pushing about a quarter the way onto the slide, then the ENTIRE FRONT POST SNAPPED OFF IT'S OWN BASE. I try to buy American, but XS is making it difficult

Pot metal garbage, finish on the rear sight looks like all those bottom-of-the-barrel AR parts all scuffed up. Tritium isn't even bright, looks half dead straight out the box.

Never buying XS again, ever.