UTG Pro AR Flip-up Rear Sight Picatinny Black. 55" Stowed Height Manual Flip-up Sight Tower Locks when Deployed Unlocks via Push Button Weights 1.52 oz. Specifications for UTG Pro AR Flip-up Rear Sight: Manufacturer: UTG Pro Color: Black Condition: New Sight Mounting Orientation: Top Mounted Sight Position: Rear Gun Model: Universal AR-15 Gun Make: AR Platform Front Sight Color: REAR SIGHT ONLY Rear Sight Color: Black Deployable: Yes Fabric/Material: 6061-T6 Aluminum Front Material: Aluminum Height: 1.82 in Length: 1.26 in Blade Height: 0.261 in Gun Type: Rifle Hand: Ambidextrous Mount Type: Picatinny Attachment Type: Picatinny Country of Origin: USA Package Contents: UTG Pro AR Flip-up Rear Sight What firearm models does the manufacturer say UTG Pro AR Flip-up Rear Sight is compatible with? The manufacturer says that UTG Pro AR Flip-up Rear Sight is compatible with AR-15 UniversalUTG Pro TLURS55: AR Flip-up Rear Sight Picatinny Black