I'm another satisfied Talley customer - I put them on my .300 Mag T-3 Lite as the factory did not seem to stay secure as well. I had not problems either taking out the plastic or installing the Talleys with the provided screws. This was about 3 years ago, though.

�That rifle on the wall of the labourer's cottage or working class flat is the symbol of democracy. It is our job to see that it stays there.� George Orwell