A quick-detach magnifier mount designed to provide absolute co-witness with mil-spec AR-15 iron sights and red-dot optics of similar height, the American Defense Mfg. SM-02 is compatible with all ...

At ranges of 50 to 100 yards, a red dot can tighten up shot placement noticeably. But at home-defense distances of 25 yards or less, it doesn’t provide much of an advantage over that of typical ...