The Bisley grip frame will not fit the 327 unless the little ears that extend into the back of the cylinder frame are ground off... For some reason I was thinking that I'd only see this on the NM meduim frame Blackhawks. Since I choose to not modify my Bisley grip frames at this point in time I dug out a set of Eagle Sambar Stags that was in the parts box. Added a Bowen target rear sight... Started putting the Brownell's cold blue on one of the sight blades that Bill Fowler sent me last year... The 130s may need a little taller front blade..