 HPX high-performance extreme is what that stands for and you'll see that it has some similar characteristics and features that the color case hardened one does but it's a little bit different the matte black called Sam blasted blued slide very aggressive G10 grips and with the front strap and heavy texturing with the flat mainspring housing when you grip this it just forms to the hand forward serrations it's definitely a shooter now it has the three dot sights that are very similar Novak style the ramped up rear two dot in the rear one dot there you place it centerhold and it's pretty dead nuts I really enjoyed it the trigger pull right at four pounds so accurate the five inch match grade barrel and that short trigger pull and reset it just makes it so much fun