My friend had and Glock 17. It was Gen2 (CNM series), that he bought used some10+ years ago. It was not used a lot by security company that owned it, they mostly carry, rarely shoot (even for training). But my friend, he shot it a lot. And he shot it good (he is one of best IPSC and IDPA shooters in country). He even cleaned it... once a year or so. (Pictures inside!)