The SLx 1-6x24mm SFP Gen IV Rifle Scope is the latest iteration of their best-selling carbine optic incorporating a fully upgraded optical system an integrated dovetail throw lever and all-new ACSS reticles. With superior glass clarity and swift magnification controls. This 1-6x low power variable optic features the ACSS Aurora reticle that utilizes yard-based BDC (ballistic drop compensation) holdovers calibrated for 5.56 and .308 cartridges. Like all Primary Arms Optics products this rifle scope comes with an industry-leading lifetime warranty and commitment to customer satisfaction.