Recently bought a new Springfield Operator Lightweight to carry through the sheriff's academy. The gun functioned perfectly for the first 1000 rounds of ammo. We were at the range and I noticed the hammer following the slide forward. I gave it to our armorer and we took it apart and he diagnosed the hammer teeth to be cut incorrectly from the factory, which was causing the sear to slip of the hammer hook . He showed me the angle through a magnifying glass and you can see the hammer hooks almost seem rounded off. I ordered a cylinder and slide hammer, sear, and disconnect set. I contacted springfield and obviously they were cool and wanted me to send the gun back to them, but I don't have that kind of time. Just a heads up to hidemembers whose lives depend on this gun.