[Aluminum] The 1.5 inch rings were in stock and I was using these for mounting a Burris scope on a .44 magnum. I felt like the 1 inch would have been a better fit, but these worked out fine. The rings didn't come with enough zero MOA inserts but I emailed Burris and they got them out to me in no time. Burris is an excellent company and all of my Burris products have been great!

[30 mm] I am extremely pleased with the performance, versatility, ease of use, and packaging of this product. The rings hold my Burris XTR scope securely in place without having to over-tighten fasteners. The eccentric ring concept for scope MOA setup changes is an absolutely brilliant idea. Setup instructions are very concise and thorough, right down to the chart for expected MOA change vs. ring to ring spacing. And last but just as equally important; product is packaged neatly in a Pelican case with Torx-type L-wrenches. Way to go Burris!

[4 (per Ring)] I had to add an adapter to rise the 50 objective over the barrel. To low for a 3-9 x 50 scope.

[4 (per Ring)] Nothing bad to say, only positive. I have several sets of Burris Signature rings but this is my first set for a 34mm scope. I have a very accurate rifle but it shoots far to the left, I needed these to use the inserts to bring the POI back to the right. My rifle is now pretty well centered left/right and I have much adjustment left. You can also use the +/- offset inserts to increase your elevation range. The inserts also prevent scope ring marks, increase resale value. The XTR rings are reasonably priced and very well built. I have Badger, Seekins, Vortex and other rings and I can say, if I need another set of 34mm rings these Burris XTR Signature rings are the ones I'll be getting.

[30 mm] Before I review these high quality mounts I want to say how please I am with the professional phone service given by B&H over the phone. They were friendly, knowledgeable, and accommodating with this order. They are a first class company. I will deal with them again in the future. These new rifle scope mounts fit my Remington 22 perfectly. I have been able to leave my iron sights on the rifle as backup because these allow sighting thru the built in openings of the rings. The Weaver scope (6x38) fits perfectly and securely. The handy mounting thumb screws allow easy removal should I desire to remove the scope and rings during rifle cleaning. Remounting afterward does not require any new scope adjustments!