Meprolight Highly Visible Day/Night Self-Illuminated Fixed Set for S&W M&P Green/Green 0. But these Pistol Parts designed by Meprolight greatly improve your accuracy in all lighting conditions by providing a green tritium outline for your front sight which quickly draws your eye to the front sight ensuring you snap those shots on target without fumbling. With a u-notch design the Meprolight High Visibility Tritium Sight Set easily aligns with the rear sight giving you a precise aim point that will come in handy during any shooting scenario. For enhanced accuracy at day or night you can install the Meprolight Highly Visible Tritium Smith and Wesson M&P Sight Set. Specifications for Meprolight Highly Visible Day/Night Self-Illuminated G/U Fixed Set for S&W M&P: Manufacturer: Meprolight Gun Make: Smith & Wesson Color: Black Rear Sight Color: Green Sight Style: U-Notch Gun Type: Pistol Illumination Type: Tritium Package Contents: Meprolight Highly Visible Day/Night Self-Illuminated G/U Fixed Set for S&W M&P Meprolight 417663111: Highly Visible Day/Night Self-Illuminated Fixed Set for S&W M&P Green/Green 0417663111