[charlie in md]

I have 18K rounds through mine, no issues. Love it. Having said that, here are a few parts that may break through usage: the O ring, the link, the piston, and the piston seal (although the last two now come connected together, and I have had no failures). There is a parts kit that sells for $85 that contains all of the above. The nice thing about the gun is that you can easily replace almost every part yourself if one does break.