Night Fision AR-15/10 Tritium Adjustable Post Yellow Dot Sight w/Green Tritium. Their new Perfect Dot Post Adjustable Front Night Sight Gen 2 features a new narrower Perfect Dot with Tritium. This thinner version of our previous Front Sight Post gives you all the iron sight you need with less material to disrupt your sight picture. Specifications for Night Fision AR-15/10 Tritium Adjustable Post Yellow Dot Sight: Manufacturer: Night Fision Gun Make: AR Platform Gun Model: AR-15 Color: Black Gun Type: Rifle Height: 1 in Dimensions: 1.00 X 4.60 X 7.10 in Width: 4.6 in Package Contents: Night Fision Ar-15/10 Tritium Adjustable Post Yellow Dot Sg Night Fision AR000002YGXX: AR-15/10 Tritium Adjustable Post Yellow Dot Sight w/Green Tritium