Leapers UTG ACCU-SYNC Top Mounted Deployable Rear Sight Black. UTG Pro machined these AR 15 Parts from rugged lightweight aircraft-grade aluminum and a matte black finish for minimal reflectivity. The Leapers UTG ACCU-SYNC Spring-Loaded Flip-Up Rear Iron Sight provides a secure zero hold and reliable return to zero when mounted on your AR-15's Picatinny rails. Also these sights feature tool-less windage adjustment and push-button activation for simple use and guaranteed accuracy. Install this Leapers UTG ACCU-SYNC Spring-Loaded AR15 Flip-Up Rear Sight for enhanced precision and as a reliable aiming point when you can't use an optic. Specifications for Leapers UTG ACCU-SYNC Top Mounted Deployable Rear Sight: Manufacturer: UTG Pro Color: Black Condition: New Rear Aperture Size: 0.078 - 0.198 in Sight Mounting Orientation: Top Mounted Sight Position: Rear Gun Model: AR-15 Gun Make: AR Platform Front Sight Color: REAR SIGHT ONLY Rear Sight Color: Black Deployable: Yes Fabric/Material: Aircraft Aluminum/Steel Front Material: Aluminum Height: 1.8 in Length: 1.21 in Gun Type: Rifle Hand: Ambidextrous Width: 1.41 in Gun Rail: Picatinny Finish: Matte Attachment Type: Picatinny Mount Type: Picatinny Weight: 1.4 oz Features of Leapers UTG ACCU-SYNC Spring-Loaded AR15 Flip-Up Rear Sight: Precision Machined from Aircraft Aluminum with a Matte Black Finish Spring-loaded Posi-lock Push Button Activation Automatically Deploys Sight Tower and Prevents Sight Tower from Collapsing when Deployed Features Tool-free Windage Adjustment and Dual Apertures Ideal for a Variety of Different Scenarios Utilizes a Single locking Torx Screw with Low Profile Mounting Base and Square-shaped Integral Recoil Stops for a Secure Zero Hold and Return to Zero on MIL-STD-1913 Picatinny Rails Designed to Match MNT-757 UTG ACCU-SYNC Spring-loaded AR15 Flip-up Front Sight Package Contents: Leapers UTG ACCU-SYNC Top Mounted Deployable Rear Sight What firearm models does the manufacturer say Leapers UTG ACCU-SYNC Top Mounted Deployable Rear Sight is compatible with? The manufacturer says that Leapers UTG ACCU-SYNC Top Mounted Deployable Rear Sight is compatible with AR-15Leapers UTG MNT-957: ACCU-SYNC Top Mounted Deployable Rear Sight Black