What do you guys think of running an RMR as the primary sight on a rifle (carbine AR)? Let me give you some background: my duty rifle is currently setup with only iron sights. I used to have an Eotech on this rifle, but my agency deauthorized these sights after the debacle about their zero shift (an issue I never had). Some of our currently authorized optics include the Trijicon RMR, the Aimpoint Pro, and the Leupold LCO. The Aimpoint is too bulky, I wasn't a fan of the Leupold, and I always dismissed the Trijicon option as a pistol sight... until recently. So, I've been on iron sights since the Eotech thing fell flat. A few months back I built an ultralight AR-15 for my wife. This rifle weighs in at 4.5 pounds with the sight, and I used a Trijicon RMR Type 2 - 1 MOA as part of my weight savings plan for this rifle. After shooting this rifle for a while I've decided I really like the RMR on her rifle. It's a super light sight, and optically speaking it seems to work as well as an Aimpoint micro I have on another rifle. But, I've never really evaluated how well these RMR sights hold up for field use in the long run. NOTE: I'm considering this application for a duty gun, but I'm not dragging it through the sand in Iraq for months at a time. It needs to endure harder use than a safe queen, and be reliable, but not exactly take a beating like a SEAL might put it through on an operation in the Middle East. Do any of you have long term experience with running an RMR on a rifle (specifically the Type 2 variant)?