This Primary Arms rifle scope is part of the SLx optics line. SLx optics have built a reputation for innovation, reliability, and value. All SLx optics undergo rigorous field-testing during development to best serve you in any environment. The Primary Arms SLx 1-10x28 Rifle Scope takes what is popular about low power variable optics and steps it up a notch to a larger magnification range without making sacrifices common with more traditional 10x optics. The first true 1-10x LPVO boasts a generous 3.2 - 3.5 inches of eye relief allowing you to easily set this scope up on your rifle of choice and still features a great field of view throughout the magnification range. With the addition of an integrated magnification lever, you can quickly and easily go from a true 1x sight picture all the way up to 10x magnification for those longer distance precision shots or simply for better target identification. This is truly a versatile optic that can do it all from close quarters to long range while still only weighing 19.1 ounces at 10.5 inches long. Just like the other optics, this scope is protected by the Primary Arms Lifetime Warranty. If a defect due to materials or workmanship, or even normal wear and tear, has caused your product to malfunction, Primary Arms will either repair or replace your product. Second focal plane ACSS Raptor M10S reticle M10S Reticle optimized for second focal plane design Integrated magnification lever 11 Illumination settings with 2 NV settings Daylight visible illumination Partial illuminated horseshoe and chevron aiming point 1-10x magnification range 28mm objective lens 3.2 - 3.5 inches of eye relief 34mm Tube diameter High strength one-piece 6061-T6 aluminum body Black hardcoat anodized Only 10.5" long and weighs 19.1 oz. Tested and proven for durability with extensive live fire testing Backed by an industry-leading Lifetime Warranty The ACSS Raptor 5.56 M10-S is an all-new SFP reticle that is purpose-made for optics with a 1-10x magnification range. In close quarters, the ACSS Raptor 5.56 M10-S offers a bold center chevron and outlying horseshoe for fast target acquisition. For long-range precision, users can leverage the full functionality of their ACSS ballistic drop compensating reticle, including vertical and horizontal ranging, multi-value wind holds, moving target leads, and intuitive ballistic holdovers to 800 yards. Check out the manual below for a deep dive into all the functionality of this reticle.