you are referring to the SMSc.Shooter9.............Shield has two sights that are cut specific to the Sig 365 and our SA Hellcats. The RMSc and the CMSc.
I believe the CMSc is plastic framed. Not sure if the optic lens is plastic or glass. It is less expansive than the RMSc by quite a bit.
I have the Swamp Fox Sentinel, love it. Choose it because of it's aluminum casing over the Sig Romeo's plastic. Also the brightness adjust on the Sentinel is easy, 2 buttons on the side for up/down. The Romeo's is 1 button that's located near the lens, so it's not as fast to change (not that you'd realistically need to). Also the Romeo has had some bad reviews about not fitting or working properly (can't comment on the fit on the Hellcat, seems to be a general issue) And the Sentinel has 2 model, a manual brightness or auto brightness model.Great thread, I read the whole thing, and was disappointed it ended. Just got my Hellcat and trying to figure out which optic to put on it. Anything new these last 2 months? Thanks!