The Viridian Reactor R5 Gen 2 Green Laser Sight is a high-quality accessory designed specifically for handguns like the S&W Shield 9/40 or 45. The laser sight features a green color beam for improved visibility and is powered by batteries for convenience. The model is compatible with the Shield 9/40 or M&P Shield 45 handguns, providing a reliable and precise aiming solution for hunters and sportsmen. The package includes a holster for easy and secure carry, making it a practical and efficient choice for gun enthusiasts.