Better is an IER, Intermediate Eye Relief scope, designed for forward mounting on rifles, which is not as long an eye-relief as a handgun.
My M1A SOCOM 16 wears a Leupold IER, like this one from Midway (no endorsement):
This page shows an M1A with a different mount, but with the same scope in the same position, so you can an idea what it looks like: http://images.google.com/imgres?imgurl=http://www.ultimak.com/products/M8inst.jpg&imgrefurl=http://www.ultimak.com/M8.htm&usg=__RAochr6TGXyE-Oh95htK8h_VG3U=&h=161&w=400&sz=9&hl=en&start=15&tbnid=P3y0ZxZ_QgPeZM:&tbnh=50&tbnw=124&prev=/images%3Fq%3Dspringfield%2Bsocom%2B16%2Bleupold%2Bscout%26gbv%3D2%26hl%3Den%26safe%3Doff
I am very happy with this combination. I replaced a Trijicon ACOG Reflex with the Leupold and really shrunk my group sizes while maintaining my speed. My left-eye-dominance (and right-handed) means I usually close my left eye to have a clearer picture, but if you are same-eye-dominant, it will be even better.
The ACOG Reflex is now on a CAR-15, mounted above the carry handle, where its speed but lack of pin-point accuracy is better suited.