If you are on a budget - Firefield 1/2 Inch Weaver Riser

I ordered this riser for a customer that was trying to save every penny. This riser looks nice and will get the job done if you are building on a budget, and trying to save every penny. However.....on the one I received, the thumb screws were drilled and threaded off center so bad that they did not fit squarely against the side of the riser. So I had to take them off and file the back of them down until they fit squarely and could be tightened properly.
I definitely would not use this riser on my personal rifle. There are a lot of other brands on the market that cost a little more but are much higher quality. Most of the time you get what you pay for, and this was definitely one.