That rifle is a STG-58 FAL in .308, the earlier Belgian/Austrian model. The scope is an Elcan Spectre, flip lever 4X, red dot/lighted reticle depending on how you rotate the knob. Courtesy of a pair of NVG,s I brought home from Afghanistan, I traded for a well used Win M71 which in turn I traded for the FAL at my local Funshop in 2012 after deployment. The scope was given to me in theater by an officer I knew, he (found it) had no use for it but knew I liked firearms and could possibly use it.
The FAL is a hoot to shoot, cannot miss with it. My wife likes to shoot it also from the bench, it has a soft push for a recoil so no bruised shoulder. Been loading up ammo for it plus accumulating any commercial I can get my hands on, probably around 1500 rounds stashed away now. Some of the old timers at the range don't seem to like when I set up with it, oh well. Glad ya like it enough to ask about it.