I have a S&W SPORT .223 and really like the rear sight that came with it. I am now looking for a rear for a AR pistol I am building. My pistol upper does not come with a rear sight but has the same front sight configuration as my S&W the F type. I want to get a rear like the one on my S&W SPORT.
Is the rears S&W uses, Magpul poly gen 2 mbus ?? or are they some other manufacture ??
If anyone has a S&W takeoff or knows where I can get one I would gratefully appreciate it.

Thanks Bullstone