It's OEM, what more could you want?

I wanted to provide some clarification if you are like me and asked, "what is different from Gen4?" Well, contrary to my internet searches, I have found a couple differences other than the obvious orange follower and a "lip" change on the base plate. When I compared it to my Gen4 mag that came with my weapon, I noticed my Gen4 has some metal in the release cutout part, the Gen5 has no metal. Additionally I noticed Gen4 has a little "window" cutout with metal backing on it just above those release cuts, Gen5 does not have the window. Hope this helps, I'll update it once I get some range time in and see if I notice any difference.