The Burris Fullfield E1 4.5-14x42mm is designed to slot into the lineup with a significant increase in magnification over the 3-9x, but still keeping a small lower end magnification of 4.5 - which allows for a significantly wider field of view than the larger 6.5-20x. Features a standard ballistic plex reticle without windage marks Side-adjusting parallax focus The riflescope is resistant to a lifetime of field use, heavy recoil, and harsh vibration. It is protected by the Burris Forever Warranty.