XTS Flip-up Front Sight Black. The XTS-FFS's adjustable post makes for easy alignment and sighting in and the simplistic flip up mechanism combined with it's sleek styling makes this unit a terrific addition to the aesthetics and functionality of your rifle. Made from lightweight polymer plastic the XTS-FFS won't weigh your barrel down either. Adding one of these to your rifle is a great idea Specifications for XTS Flip-up Front Sight: Manufacturer: XTS Color: Black Sight Mounting Orientation: Top Mounted Sight Position: Front Front Sight Color: Black Rear Sight Color: Front Sight Only Front Post Shape: Square Deployable: Yes Fabric/Material: Polymer Front Material: Polymer Height: 2 in Gun Type: Automatic Rifle Included Accessories: None Water Resistance Level: Yes Illumination Color: None Hand: Ambidextrous Mount Type: Picatinny Features of XTS Flip-up Front Sight Adjustable Front Sight Post (elevation) Package Contents: XTS Flip-up Front Sight XTS XTS-FFS: Flip-up Front Sight Black