No, it will fit Smith & Wesson models 10 THRU 19, 48, 53, 56, 64 THRU 68, 242, 296, 547, 581, 586, 617, 647, 648, 686, 696 AND GOVERNOR.
Yes, this should fit.
This Crimson Trace Lasergrip is not compatible with your Colt King Cobra.
The Crimson Trace Lasergrip For Smith & Wesson K/L Frame might work for a Taurus 66 but fitment cannot be guaranteed.
Yes, the Crimson Trace Lasergrip For Smith & Wesson K/L Frame Round Butt will work for the Smith and Wesson Governor.
Please request your batteries at CrimsonTrace.com on the following link - https://www.crimsontrace.com/support/free-batteries-for-life/
It will fit Smith & Wesson models 10 THRU 19, 48, 53, 56, 64 THRU 68, 242, 296, 547, 581, 586, 617, 647, 648, 686, 696 AND GOVERNOR.
Yes, this fill fit.
No, it will not fit. Here is a link to a model that should:
https://www.opticsplanet.com/crimson-lasergrips-for-smith-and-wesson-k-l-n-frame.html
The square butt model (LG307) fits my S&W model 65 .357 great. Except for a tiny gap where the grip meets the butt it's a perfect fit. Installation was a breeze and it went on with no problems. I can recommend it for the 65.