Rocky,
You don't see many Model 27s with 5 inch barrels.

I got a used Model 27 way back when ($85.) that had a 6 1/2 inch barrel.

Before going to 'Nam,I sent it up to S&W and had them cut/crown the barrel back to 4 inches and also move the front back as well.

It went to 'Nam with me and later on in years I had it Metal-lifed and then sent it to Magna-Port for the then new magna-port process.

Wayne