I found this today, nice site for a M1a and Fals. Site in at 300m and range out to 1.2k with a simple hold over. Standardized by the DEA, ATF, and FBI SWAT, the EOTech 552.XR308 Holographic Weapon Sight (XR.308 Reticle, AA Batteries) is by far the most popular Holographic Weapon Sight model. This NV compatible, AA battery model is the sight of choice by military units like Stryker Brigade, 10th Mountain, and 3rd Infantry. It is battle proven to withstand the abuse that any harsh environment, high powered weapon platform, or military mission can dish out. The EOTech 552.XR308 Holographic Weapon Sight with .XR-308 reticle provides a multi purpose image that is calibrated to the specific trajectory of the M240. The center dot is used for 0-300 meters. Three additional calibrated aiming dots are for 600m, 900m and 1.2km. No matter what .308 cal platform you own, the 552.XR308 can take your speed and accuracy gains to the next level. In addition to the M240 machine gun, the sight works with other .308 platforms such as Remington 700s or AR-10 style rifles. The EOTech 552.XR308 Holographic Weapon Sight uses laser light to illuminate a holographic reticle pattern embedded in the heads-up display window and forms a virtual image of a reticle pattern. The shooter looks through the heads-up display window and sees a bright red image of a reticle pattern projected onto the target plane. There is absolutely no light projected onto the target plane. The EOTech 552.XR308 Holographic Weapon Sight has no magnification. The EOTech 552.XR308 Holo Weapon Sight is equipped with mounting hardware to attach to a standard 1" dovetail or Picatinny style rail. To achieve the best results and accuracy, the HWS must be mounted properly. Users manual for EOTech 552.XR308 Holo Weapon Sight you can find HERE.