This forum needs more threads on revolvers! Here are some photos of my 627 Performance Center with the new Docter sight added. I used the J Point mount that fits the factory S&W rear sight and used the J Point adapter shim to mate the Docter sight with the J Point mount. I'm very pleased wit this sight. Very bright, very crisp, and very clear. It was easy to mount and get sighted in. It's so accurate that it's almost unfair....almost! Don't pay attention to the Goodyear grips. I've got the gun set up to run full house .357 loads for hunting this fall and the rubbers definitely help with the recoil.