I just put a 2.5 moa Red Dot on my CVA Optima .50 pistol. This gun has recoil way more than a .44 mag with the load I use and it has held up just fine. I had it to the gun range this morning and had to make a very slight adjustment to get it zeroed at 50 yards. Very happy with it. Very clear. 40mm tube, 2X power. Target acquisition is instant and no searching for the dot. This model has 11 grades of dot intensity.