Aimsport's M14/M1-A Side Scope Mount has an ultra-sleek, lightweight, drop-in design which provides 4.3" of rail space for affixing optics to your rifle. Crafted of 6061-T6 aluminum, its low profile allows the use of iron sights. It has a milled opening for ejection clearing and a Picatinny 1913 rail. New for 2016. This mount is an ultra-sleek, lightweight upgrade for your M1A rifle. Drop-in design provides 4.5 inches of rail space for affixing optics to your rifle. Features: Low profile allows use of iron sights Milled opening for ejection clearing Mil 1913 rail Lightweight