I've always liked the location of the safety selector on Mossberg 500 shotguns but not the flat plastic selector button. Smooth , fast operation can be problematic. I replaced the factory selector with a machined aluminum piece from NDZ Performance via Midway and the improvement is 100% of the OEM OPpart. I installed mine on my 20 ga. 500C house gun and it was easy even with my bad hands. Just take care to not lose the tiny detent ball and spring.