Hey guys, just picked up a 220 Hunter in 10mm with kryptek finish. I'm was looking forward to mounting an RMR of some sort on it, so I contacted SIG. I was told that because my 220 hunter has adjustable rear sights, that my only options for mounting a mini reflex are to have the slide milled, have a custom adapter plate made, or use a bridge mount attached to the bottom rail. The bridge mount is out of the question, solely because I purchased this gun as a work horse. It will accompany me to grizzly country for elk and moose hunts, as well as be used for a multitude of other tasks I plan on asking if it, all from within a holster. So, my only two options are for slide milling or custom plate manufacture. So, first question is, why can a fixed rear sight sig easily be fitted with an adapter plate, as opposed to an adjustable rear sight? According to schematics, the dovetail machining is the same on a 226 as a 220, or any other sig with fixed sights one can conjure up. The only problem I can foresee is the placement of the dovetail milling on the slide are in slightly different locations? And after having contacted Trijicon with a few questions regarding their mini reflex series, the did give me contact info for a machinist making custom adapter plates, but this option is only nominally cheaper than having the slide milled. Any one else have any other information on an adapter for the rear dovetail of an adjustable sight 220?