A quality product, but be careful fitting the rear dovetail sight to the slide. - TANDEMKROSS Eagle Eye Fiber Optic Sight Set

The instructions indicate that you might need to remove material from the bottom on the sight to get it to slide into the dovetail. I removed a little too much making the sight rise up in the front. I contacted Optics Planet and returned the sight. OP sent me a new one. Great customer service! To install the new one, I placed it in the freezer for a while and heated the slide to about 150 degrees in the oven. I was able to press the sight in without removing any material from the bottom of the sight. I shot about 150 rounds after sighting it in. Great sights!