Originally Posted by accessbob
...Now I've heard of SW9VE but never 9F.
Also, we are not sure if it is the ammo ...but it appears that it may be light striking but it could just be the primers on the cartridges.
SW9F is a first-generation Sigma. I have its sibling SW40F. My 40F ran great right out of the box, but after 500 rounds or so the light strikes began. It seemed to be ammo-specific for a while, but eventually it would not light off any round.
I called S&W, and the authorized a return for repairs. The replaced the striker, cleaned it up and returned it at no charge. I think the striker and tip had been redesigned after I bought my 40F, and they put in the updated striker.
No light strikes since.
If there is any doubt, call S&W Customer Service and explain what is happening. Most members on this board have had wonderful experiences with S&W service.