I like Remington style extractors. I've used them for more than 30 years and have never had a failure. I recently purchased a new custom action had the choice of a Remington or M16 style, I chose the Remington style. Find a gunsmith that knows how to correctly install one. There are probably many who know but if I needed one installed, I would send the bolt to Greg Tannel. If you have an M16 style installed, you will probably have to have your barrel counterbore enlarged.