The US Optics ER25 5-25X58 TPAL is a variable magnification scope that is made for target engagement out to 2000+ yards. Turret Parallax Adjustment is utilized on this model vs. an adjustable objective. 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 insure decades of reliable and accurate adjustments. US Optics ER25 5-25x58 RDP Riflescope UR052558-10