This Primary Arms rifle scope is part of the SLx optics line. SLx optics built their reputation for innovation, reliability, and value. All SLx optics undergo rigorous field-testing during development to best serve you in any environment. The SLx 1-6x24mm SFP Gen IV Rifle Scope incorporates a fully upgraded optical system, an integrated dovetail throw lever, and all-new ACSS reticles. With superior glass clarity and swift magnification controls, you'll always have the power to identify, range, and engage your targets with unrivaled precision. This 1-6x low power variable optic features the ACSS Aurora reticle that utilizes yard-based BDC (ballistic drop compensation) holdovers calibrated for 7.62 plus .300AAC supersonic and subsonic loads. The Primary Arms Deluxe Scope Mount is ideal for 1913 Picatinny and similar “flat-top” mounting platforms. Aluminum construction, durable matte black anodized finish. 2.52 inches of clearance between the rings. Places the center of your 30mm tube scope 1.5 inches above the rail. Fits scopes with 30mm tubes. To make sure the mounting nut is fully tightened, turn the nut clockwise until resistance is encountered. After that, turn another 1/2 turn. If a torque wrench is being used, we recommend no more than 35-40 in-lbs. EXPORT CONTROLLED ITEMS: These items are controlled for export and may require an export license from the U.S. Government. Buyer acknowledges that Buyer is responsible for obtaining all export licensing authorizations and filing all export documents prior to export from the United States.