USED Troy Dioptic Apeture DOA Top Mounted Deployable Rear Sight Black SSIG-FBS-RDBT-00. We are an Authorized US Distributor for Troy Weapon Accessories. Advanced design superior sighting and battle-ready toughness define the Troy Di-Optic Aperture (DOA) Fixed Rear BattleSight. This permanent rail-mounted alternative to a standard A2 sight allows limitless mounting options on all-length rails with a serrated ramp to eliminate glare. Provides a continuous zero unflinching durability and peace of mind. These sights provide lightning fast target acquisition and are manufactured to exceed military specs. The optically engineered Di-optic apertures center your eyes instantly and effortlessly providing a clearer target picture than with round apertures. The sights feature two settings one for up to 300 meters and a second for up to 550 meters. This versatility makes the DOA ideal for military law enforcement and home defense applications. These advanced sights have been extensively field-tested and like all Troy Industries products are Battle Ready. Note: Sight is designed to work on same plane rail systems only. Will not work with a railed gasblock that is higher or lower than the receiver. Specifications for Troy Dioptic Apeture DOA Top Mounted Deployable Iron Sight: Manufacturer: Troy Color: Black Additional Features: Dual Aperture Increases accuracy out to 550m Sight Mounting Orientation: Top Mounted Sight Position: Rear Gun Model: AR-15 M16 M4 AR-10 Gun Make: AR Platform Front Sight Color: REAR SIGHT ONLY Rear Sight Color: Black Front Post Shape: Post Deployable: Yes Fabric/Material: Hardened Aircraft Aluminum Stainless Steel Front Material: Aluminum Blade Height: 1.36 in Rear Blade Height: 1.36 in Front Blade Height: 1.36 in Illumination Type: Non-Illuminated Gun Type: Rifle Illumination Color: None Hand: Ambidextrous Mount Type: Picatinny Finish: Mil-Spec HardCoat Anodized Attachment Type: Picatinny Country of Origin: USA Features of Troy Rear Di Optic Aperture (DOA) Fixed Battle Sight: Di-Optic Apertures improve sight acquisition speed Increases accuracy out to 550m Exclusive Battle Ready design Installs and adjusts easily Aircraft aluminum 6061 & stainless steel Type III hard coat w/ black oxide or Flat Dark Earth finish Hardened T6 aircraft aluminum construction with stainless steel components Fits all M4 M16 AR15 AR10 variants and other firearms that have a flat top receiver or removable carry handle A permanent rail mounted alternative to a standard A2 rear sight or carry handle Provides constant access to fixed sights that continuously hold their zero Extremely durable and reliable providing peace of mind The most rugged fixed rear sight available Package Contents: Troy Rear Di-Optic Aperture (DOA) Fixed Battle Sight We offer complete line of Troy Weapon Accessories. For our complete selection of products by Troy on sale please visit our Troy Industries page. For more Weapon Accessories please visit our Weapon Accessories store section. What firearm models does the manufacturer say Troy Dioptic Apeture DOA Top Mounted Deployable Iron Sight is compatible with? The manufacturer says that Troy Dioptic Apeture DOA Top Mounted Deployable Iron Sight is compatible with AR-15 M4 M16 AR-10Troy SSIG-FBS-RDBT-00: Dioptic Apeture DOA Top Mounted Deployable Rear Sight Black