The single-sided safety on my Springfield hi-cap looks very much like the Wilson ambi; maybe they sell it as a replacement part?
The C&S part is very rough. I have decided to put in hours of clean-up and polishing to make them look presentable, but yeah, a $60 part should look good and fit well. However, I'm not surprised they wouldn't take the part back after you started cutting on it, and wouldn't describe their refusal as "failing to stand behind their product". If they had installed the part, and it subsequently broke, they'd replace it. If the part was in original condition, they'd replace it. After someone has altered the part, I think they have a right to not fix problems that may have been caused by someone else. That said, I'll still agree that for the price, the part is pretty rough.
The C&S part is very rough. I have decided to put in hours of clean-up and polishing to make them look presentable, but yeah, a $60 part should look good and fit well. However, I'm not surprised they wouldn't take the part back after you started cutting on it, and wouldn't describe their refusal as "failing to stand behind their product". If they had installed the part, and it subsequently broke, they'd replace it. If the part was in original condition, they'd replace it. After someone has altered the part, I think they have a right to not fix problems that may have been caused by someone else. That said, I'll still agree that for the price, the part is pretty rough.