Our winter indoor rim fire pistol league uses a target with a red center. This makes it a bit tough for the red dot users. So I saw this S&W red/green dot sight and won it with a bid of $44. I bolted it on the 10 shot 617 yesterday and headed off to the range. This is 10 shots D/A at 15 yards with no adjustments to the sight. Rather be lucky than good any day. And the green dot works extremely well against the red bullseye.