I thought, as simple as they are, they would hold up better than optically complex scopes. I was a fool. I bought a closeout holo type sight. It lasted for 3 rounds on my .45 WinMag Contender. I replaced it with a cheap scope which has been working fine. From doing the autopsy on the thing - seeing how it failed - this is one case where I would recommend spending a lot of $$$ if you want a holo or a red dot. I will stick with the cheap scope - it is more accurate, although slower to acquire the target.
mike