The UM's Combats, which padded the backstrap, came on many recent S&W K&L frames. The 296 came with boots - the rounded Combats are a vast improvement there. The squared Combats vastly improved my 696's early, pre-Ahrends wood grip, days. Those square Combats came from my new 6" 66-6 - and from S&W Accessories. My new 2" 10-11 came with round Combats, too. I believe the current 10/64/67 still come equipped with Combats, too - as possibly was the one new 619 that I saw at a Bass Pro Shop last year. For non-wood grips, they were my favorite - unless serious recoil was present - then I have a pair of X-frame .500 Magnum Hogues for K, L, & N frames, too. Everything else here is wood.
Stainz