VISM Pro Series Top Mounted Deployable Front Sight Black. Features an A2 front sight post that is fully adjustable for elevation. Front sight height is designed for handguard rails monolithic receivers and gas blocks that are at the SAME height as the AR receiver Picatinny rail. Dimensions: 2.4"L X 1.1"W X 0.8"H Weight: 2.0 oz. Aluminum main body with steel A2 front post. Mounts onto Picatinny Mil-STD 1913 rails mounting tool included. US. PAT. 9976834 Specifications for VISM Pro Series Top Mounted Deployable Front Sight: Manufacturer: VISM Color: Black Sight Mounting Orientation: Top Mounted Sight Position: Front Gun Make: AR Platform Front Sight Color: Black Rear Sight Color: Front Sight Only Deployable: Yes Fabric/Material: Aluminum Gun Type: Rifle Hand: Ambidextrous Mount Type: Picatinny Attachment Type: Picatinny Features of Vism Pro Series Flip-Up Front Sight: Features an A2 front sight post that is fully adjustable for elevation Front sight height is designed for handguard rails monolithic receivers and gas blocks that are at the SAME height as the AR receiver Picatinny rail Front sight post flips-up to the deployed position with a push of a button Dimensions: 2.4"L X 1.1"W X 0.8"H Weight: 2.0 oz Aluminum main body with steel A2 front post Mounts onto Picatinny Mil-STD 1913 rails mounting tool included. Package Contents: Vism Pro Series Flip-Up Front Sight VISM VMARFLF: Pro Series Top Mounted Deployable Front Sight Black