Samson Aluminum Top Mounted Deployable Front and Rear Sight SIG SG 553 A2 Rail Front Black QF-SIG-A2-A2 PKG. Their line of flip up front sights complement the flip-up rear sights. Choose one of each folding sight in this value package. All gun sights in this Samson FFS & FRS Sight Combo Package are made from 6061 aluminum mil-spec hardcoat anodized for durability. All of these Samson sights lock in place in both deployed and folded positions. The iron sight spring mechanism is quite durable and is completely concealed to prevent dirt from fouling the rifle sight mechanism. The single aperture rear sight has a "cross" shaped aperture to minimize diffraction; this sight is very fast for CQ and precise for longer ranges. The dual aperture rear BUIS has a conventional large and small aperture. This Samson Flip Up Rear & Rail Front Sight Package is quite durable and is completely concealed to prevent fouling from dirt. Specifications for Samson Top Mounted Deployable Front and Rear Sight for AR-15: Manufacturer: Samson Color: Black Additional Features: M4 Co-Witness Condition: New Sight Mounting Orientation: Top Mounted Sight Position: Front and Rear Gun Make: SIG Sauer Front Sight Color: Black Rear Sight Color: Black Deployable: Yes Fabric/Material: 6061 Aluminum Front Material: T-6061 Aluminum Illumination Type: Non-Illuminated Gun Type: Rifle Included Accessories: Standard Illumination Color: None Hand: Ambidextrous Mount Type: Picatinny Features of Samson Folding Front and Rear Sights Package: Complete all-in-one iron sights package Front and rear sights fold out of the way Package Contents: Samson Folding Front Sight Samson Folding Rear Sight What firearm models does the manufacturer say Samson Top Mounted Deployable Front and Rear Sight for AR-15 is compatible with? The manufacturer suggests that Samson Top Mounted Deployable Front and Rear Sight for AR-15 is compatible with AR-15 SIG SG 553Samson QF-SIG-A2-A2 PKG: Aluminum Top Mounted Deployable Front and Rear Sight SIG SG 553 A2 Rail Front Black