The seller of this holster didn't know much about it but stated she believed it was for a J-frame so I took a gamble and won the auction. I was hoping it would fit my 3" 36-1. So, it arrived today and after cleaning it up, I tried the J-frame and it was too loose. Ok, I'll try a K-frame- still too loose. Now I'm starting to worry, wondering if maybe the holster was made for a different gun make. Thinking the holster was too small for an N-frame, I try one anyway and bingo!, the fit is perfect. This works out great because I was looking for a good rig for my Highway Patrolman, too.