The Nightforce ATACR 4-20x50mm F1 is an excellent choice for mid-range or designated marksmen rifles. This riflescope incorporates ED glass and 130 MOA/ 38 MRAD of elevation adjustments, in a more compact size than other riflescopes.The Nightforce ATACR 4-20x50mm F1 is an excellent choice for mid-range or designated marksman rifles and was developed specifically for the R-VPS (XXXX) SOCOM Contract. This riflescope incorporates ED glass to produce exceptional clarity and brilliant images. With 130 MOA/ 38 MRAD of elevation adjustments, this riflescope offers the most adjustment of any options in the ATACR family making it ideal for a variety of cartridges and applications.