The US-Optics SN-3 3.8-22X is a variable magnification scope that is made for target engagement out to 2000+ yards. An adjustable objective provides accurate parallax adjustment from 50 yards to infinity. Reliable adjustments and extreme durability make this scope a very affordable long range tool that will fit well with most rifle platforms. Scope body, eye piece, objective housing and any and all other body parts are made with 6061-T6 aircraft aluminum and are then coated with a matte black type III hard anodizing. Elevation knobs materials consist of stainless, brass and 4130 Chrome Moly, ball detents are tungsten carbide with a stainless steel jacket. Dual elevation and windage rebound springs will ensure decades of reliable and accurate adjustments. US Optics 3.8-22x44 ERGO Features and Specifications. Model: SN-3 Parallax Control: ERGO Tube: 35mm Color: Matte Black Type III Hard Anodizing Eyepiece: Low Profile - Rapid Focus Reticle Option: Mil Scale Gap Reticle Lighting Type: 11 Pos Rheostat (Red) Knob - Elevation: EREK 1/10 Mil Knob - Windage: US#3 1/10 Mil US Optics SN-3 3.8-22x44 UR382244-5