I am selling this P116 Weapon Light that is designed to fit a Beretta 92/96 with add on rail. I hunted this down for my M9A1, but it doesn't fit, due to the rail being integrated. These lights are hard to come by and are very nice. I'm really disappointed it doesn't work. Sell for $140obo or trade for Insight M3X or Surefire X-Series light.