Unit 1 Front Sight .350" High (Standard)
Unit 1 Front Sight .400" High (Extra Tall)
Unit 1 Front Sight Narrow .100" Wide
Unit 1 Front Sight Red Fiber Optic
Unit 1 Front Sight Green Fiber Optic
Unit 2 slanted Front Sight
Unit 2 Front Sight Red Fiber Optic
Unit 2 Front Sight Green Fiber Optic