Well I don't really know if I broke the gun or not but I couldn't shoot it, thats for sure. I bought a FiveseveN Herstal pistol back in Mar 08' and after my second trip from the range, I had field striped my pistol for cleaning, reassembled it, cycled the slide back & forth a few times, and after about the fourth time of working the slide it locked up in the closed position. I could not move the slide more than 1/8 on an inch. I call FN and talked with Bob, he told be to send it back (on their dollar) they sent a UPS pickup tag and all I had to do was pack it up tight. I must say Bob & FN have great customer service as I had my pistol back in less than 2 weeks. I only wish I was told what went wrong, as I can only assume that I made a mistake when reassembling the gun. LM