Never any problem, rapid mount/dismount. - Sig Sauer 4x 24mm Juliet Red Dot Sights Magnifier

It’s been in use over six months, just under 2K rounds. I’ve never had any operational issues with this Sig product, for that matter, ANY Sig product. Teamed this with a Romeo 5, co-witnessing flip-up sights. I like my front sight up when using the red dot only for rapid close targeting with the Juliet flipped outta the way. The “flip” mechanism is very precise.
No drama, this 4X Magnifier mounts fast, locks down very firmly (adjustable), and requires no tools.
The single improvement would be a slightly larger “eye box”, as it is a bit intolerant (“shadowing”) of improper eye relief or head position. This is probably less of an issue with the 3X model. I suppose my particular vision (short sightedness) might contribute as well.
It would be great to find a compact padded Molle pouch for times when you don’t want the weight or the magnification of the 4X, but you don’t want to leave the Juliet behind.