I have 2 of them, one is a 357 and the other a 45, both with 7.5" barrels. My only complaint is that both of them hit high and left of my point of aim. At 50' they are both about 4" high and 4" left. Yesterday I was shooting at 25 yds and I had a 8.5 X 11" sheet of paper with the target in the center. In order to even keep 5 rounds on the paper, I basically had to aim at the extreme lower right corner of the paper.
They both have decent groupings for that kind of gun. The 45 will give me about a 5" group at 25 yds, the 357 will give about 4" groups at 25 yds with their favorite handloads. Not stellar, but OK I guess.
The problem though is the dang POI compared to the point of aim. I have always had adjustable sights before, so this is driving me crazy.
They both have about 500 rounds through them and have functioned well though.