I received the Tech-Sights Mini200R for my 187 series Ranch the other day. Out of the box I found it to be a solid unit, and had no issues mounting it to the rifle. Fiddling with it prior to installation revealed the windage knob to be very stiff to turn (actually painful to the fingers). I figured this had something to do with the sight being 'dry' out of the package, so I sprayed it down with oil. No easy fix there. The windage knob remained stiff regardless. Instead of killing my fingers, I simply turned the screwdriver slot side to adjust windage. However this negates the whole purpose of the sight itself...to have the dial actuated adjustment. Perhaps it will loosen up a bit from use. However, I spun the hell out of it, full distance in both directions many times, and there was no loosening effect. The elevation adjustment dial is easy to turn using a (preferably) non-marring pointed object (cartridge tip used here). You also have to be careful not to use too much force, as you can easily 'over-spin' it a few clicks. The sight post rises and lowers in a smooth fashion. Once I had the sight mounted on the rifle, I noticed that the windage dial became even stiffer. More fiddling revealed this to be possibly attributed to the elevation post's movement. It appeared that when the elevation post was adjusted to lower positions (almost bottomed out), the windage knob became pretty much ‘locked up’. I found it near to impossible to turn it by hand, for when the unit is mounted on the rifle, one has even less grasping area on the knob. Again, the screwdriver came into play for adjusting. Positive points here are that the sight looks great on the rifle, and the sight picture is fantastic. It’s built solid, doesn’t look ‘cheap’, and fit the rifle snugly like a glove. The blued finish is uniform, but a bit weak in durability. In conclusion, I ended up removing the sight from the rifle, and have contacted Tech-Sights concerning the windage dial issue. If the sight's not going to be enjoyable to use, I have no desire to leave it on. I'd rather deal with Ruger's flimsy factory 'flip' unit. I don’t know if the sight I received is a ‘fluke’ from the factory, or if the discrepancy mentioned above is inherent to its design. Since it’s a relatively new offering from Tech-Sights, maybe all the ‘bugs’ haven’t been worked out of it yet. I welcome input from those of you who have purchased this sight to verify my thoughts and observations, and I'll certainly let you all know of Tech-Sights response. Thanks for reading! Best!