TruGlo Tritium Fiber Optic Sight For Sig, #6 Front/#8 Rear Item Number: TG131ST2 The ultimate handgun sight. Unbelievable transition through all light conditions. Category: Handgun Sights Model: Tfo Frame Material: Steel Frame Color: Nitride Fortress Firearm Fit: Sig P-Series Rear Material: Tritium / Fiber Optic Style: Square Front / U-Notch Rear Rear Color: Green Base Configuration: #6 Front Front Material: Tritium / Fiber Optic Front Color: Green