I bought this for a rifle that is my new 2-gun rifle (DD MK18) I already own and have used the Burris Fullfield TAC 30 1-4x so this is an "upgrade". The finish and feel of the scope is perfect. Main difference is that the reticle on this 1-5x is smaller and thinner, which is better for longer ranges in my opinion, but a little slower on CQ target acquisition.  Also, this has one more times the magnification.
Another big difference is the size and clarity of the eyepiece- this 1-5x is larger and brighter.
I mounted the scope with an inch-lbs. torque driver per the specs, with the upper in a vise which I leveled the upper, then aimed the scope at a Sharpie line I had made on the garage wall with a level.  I then made sure the verticle reticle line lined up and then alternately torqued the scope down (I used the Burris PEPR mount).  Then at the range I zeroed it in four shots (at 50 yds) It was initially off only 1 inch in elevation, about 4 inches to the left.  After I got a tight group of 5 on target, I cranked up the elevation to check it-  I had drawn a line on my IPSC target with a bubble level then used that on my AR on a sandbag.  The hits climbed right up the line as expected per my Sierra Infinity Windows Phone app.  I then set the dials to this new zero per the instructions, was easy and great to have the zero indicated, as the old scope did not have this feature.  I've only shot it out to 300 so far, but the bright Mil "tree" reticle made it easy to repeat hits on a...
            
            
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