I particularly like those grips for your model 27. The "wings" at the top and the area just below are a bit proud, but that is a good thing. You'll be able to shave them down a tad until they're even with the backstrap. I never understood why so many grip makers leave these areas shy of the metal. Their purpose is to widen the area of contact between your hand and the top of the backstrap, making recoil much more comfortable, and it was why the magna grips came about in the first place. If you've ever fired heavy loads with minimalistic "classic" grips, you've no-doubt experienced some discomfort when that narrow area of the topstrap slams into your hand. If I knew for certain that any grips I ordered from Altamont would be similarly proudly-proportioned, that's all I would order. Sadly, this seems to be hit-or-miss. You got lucky.