Perfect for aimpoint pro - SIG SAUER Juliet3 3x24mm Red Dot Sight Magnifiers

I originally bought this to pair with my Sig Romeo 4H. It mounted perfectly with just a bit of space between the optic and magnifier. Then I used one of the included spacers and it mounted perfectly behind my Aimpoint Pro with not even a millimeter of space between optic and magnifier with perfectly matched sight picture. Base is very touch and quickly snaps between positions without pushing a button and has no wiggle. Glass is very clear. My only complaint is the eye relief is shorter than ideal for me but that's a matter of preference.