A must have for all y'all nerds running GBRS risers for your red dots and want to use a G33 / G43  / etc. magnifier for those precise BB shots.
 
Notes:
Does not come with a magnifier. This is mount only.
Compatible with G33, G43, Micro3X, and other mounts with the same footprint.
If the arm is a bit stiff to move initially ('that's what she said'), use just a few drops of WD40 on the 2 small holes that house the ball detent next to the main screw, and you're good to go!