I assume you're asking how does it compare to the plastic stuff? Even the plastic bottom metal has metal sleeves that run through it where the action screws go, so you're not compressing plastic. Those sleeves mate up with the stock pillars and give a pretty solid bolt up. I ran both on the same stock and action and can honestly say there was no improvement in accuracy when I went to the metal. That said, the metal just feels and looks so much better. If there is any improvement in rigidity it's minor. The magazine catch on the metal version is better too in my opinion.