Product Description Sig P320 Fiber Optic Low Profile · 1 - Fiber Optic Front .215" T X.117"W · 1 - Rear .223"T X .125"W X .110"D · 1 - 6-40 X 3/8” Rear Sight Set Screw 2- Fiber Optic Rods (1 Green/ 1 Red)