I purchased a Reflex about a year ago and have been using it on my AR. It's taken a few minimal bumps on schools I have attended, but recently while shooting I could just not keep a zero on it. Started off good and then after a few rounds it just went to crap. Couldnt figure out the issue until a few mags later and noticed that the front lens was loose. I tightened up the housing and have since contacted trijicon to send it in to be checked out, but has anybody else had this issue? Expected more from what I considered to be a fairly expensive purchase for a product, which should have been able to accompany me on contract without failing.