I ordered two J frame (for 36 and 37) and one K/L (for 686) from Robertson, and foolishly left positive feedback due to quick shipping before I tried them on the revolvers. When I finally did, all three fit very poorly and left large gaps. The are sold marked "no returns", which should have been a tipoff. I just took an approximately $100 bath, and will just toss them. They are garbage! I have had absolutely great results with BK, and highly recommend them..