I owned a .44 Desert Eagle in polished blue. I had a problem with it, and had to send it back twice to get it resolved. It tended to jam at least once on every clip. When it wasn't jamming, the ejection tended to be rather violent, either parting my hair or hitting me in the forehead with empties. Magnum Research also recommended the Aimpoint sights, and I bought one along with the gun. The rear lens glass shattered on about the 3rd clip. I sent the gun to Magnum Research and the Aimpoint back to Aimpoint. Aimpoint apologized and replaced the sight. Magnum Research sent back the gun saying they had swapped out some springs, but did not find any problems. I took it to the range and had the same problems again. I've fired lots of much harder kicking guns, so it definitely was not a limp wrist situation. I put the Aimpoint back on, and the rear sight glass shattered in the middle of the first clip. I again sent both the gun and the sight back to their respective manufacturers. Aimpoint again replaced the sight, no questions asked!! This time, Magnum Research tried a little harder to diagnose the problem. Their letter indicated the slide velocity was too high. That was causing the broken Aimpoints, and was also causing the jams. They machined a few thousanths off gas piston and fired several clips without trouble. This time when I got it back, it worked fine. I didn't have jams with it after that, but I never dared to put the Aimpoint back on it. Eventually I sold it and went in another direction.
Barring the issue with jams that took two trips back to M.R. to correct, the gun was built like a tank and was extremely accurate to shoot. If you want a flashy gun to impress your friends, and want to be able to shoot .44s accurate and fast, this is the gun for you. If you want to lug it on your hip hunting all day long, it gets very heavy! The grip is like a brick in your hand, and the two stage military trigger pull is a bit odd until you get used to it. I guess it was a phase for me. I'm glad I owned it, but I also don't miss it.