This rifle is going to be set up with a dedicated night vision scope, so this is is just a temporary fix so I could shoot it. Got the sight fitted and hit some steel @ 50 yards. Now that I know it works, I will spend a bit more time radiusing corners and tidying it up a bit.
BTW stay away from a vendor listed on gundeals.com, Shield Group Allied Military Technologies. I attempted to purchase a Sightmark Photon from them, they deducted $432 the day I made my online purchase 5 weeks ago and I have yet to hear from them. All emails and phone calls have been ignored. The BBB, my bank and gundeals are now involved in a resolution.