Product DescriptionThe Aim Sports MT201 Low-Profile Rear Flip-Up Sight is a durable backup iron sight for AR-15/M4 platforms. Built from aircraft-grade aluminum with a black anodized finish, it features an A2-style dual aperture for long- and short-range use. A ball bearing pivot detent automatically locks the sight when raised, while the flip-up posi-lock design helps guarantee your zero. It mounts to standard Picatinny/Weaver rails and provides precise windage adjustments with small and large aperture options.Product HighlightsLow-profile flip-up rear sight for AR-15/M4 receiversA2 dual apertures: small 0.070" and large 0.200" for versatile aimingBall bearing pivot detent with automatic lock when deployedFlip-up posi-lock design to maintain zero under recoilRugged aircraft-grade aluminum construction with black anodized finishSpecsType: Rear flip-up iron sightCompatibility: AR-15/M4 platformsMount Type: Picatinny/WeaverMaterial: Aircraft-grade aluminumFinish/Color: Black anodizedAperture Sizes: Small 0.070"; Large 0.200"Windage Adjustment: 0.65 MOA on M4-type rifles; 0.49 MOA on A4-type riflesLength: 2.5 in.MPN: MT201UPC: 815879013798Brand: Aim SportsDisclaimer: We strive to provide accurate and up-to-date product descriptions, specifications, and images; however, errors or omissions may occasionally occur. We are not responsible for any inaccuracies or discrepancies in the content provided. If you notice anything incorrect or unclear, please contact us so we can correct it. When in doubt, we recommend verifying details directly with the product's manufacturer.