Samson HK Front/SP Rear Top Mounted Deployable Front and Rear Sight Black QF-SIG-HK-SP PKG. Built with a robust construction these Samson sights will lock in both the deployed and deployed positions making them nearly indestructible. With their simple efficient design the Samson Sight Flip Front Sight - SIG (HK) / Quick Flip Rear Sight Combo deploys and locks with an oversized spring-loaded action. The durable construction and reliable mounting system ensures you'll use your Samson weapon sights for years to come. Specifications for Samson HK Front/SP Rear Top Mounted Deployable Iron Sight: Manufacturer: Samson Color: Black Additional Features: M4 Co-Witness Condition: New Sight Mounting Orientation: Top Mounted Sight Position: Front and Rear Gun Model: AR-15 Gun Make: AR Platform Front Sight Color: Black Rear Sight Color: Black Deployable: Yes Fabric/Material: Aluminum Front Material: T-6061 Aluminum Illumination Type: Non-Illuminated Gun Type: Rifle Included Accessories: Standard Illumination Color: None Hand: Ambidextrous Mount Type: Picatinny Attachment Type: Picatinny Package Contents: Samson Quick Flip SIG HK Front/SP Rear Folding Sight Combo What firearm models does the manufacturer say Samson HK Front/SP Rear Top Mounted Deployable Iron Sight is compatible with? The manufacturer says that Samson HK Front/SP Rear Top Mounted Deployable Iron Sight is compatible with AR-15Samson QF-SIG-HK-SP PKG: HK Front/SP Rear Top Mounted Deployable Front and Rear Sight Black