Home made fixed lowers.
Actually it doesn't matter. So long as you have an off list lower and make your own fix mag lower its ok. There is not regulation that says that you can't do this. Note: It better be ****n fixed dont **** around.
If you don't like the way the world is change yourself first. If you don't want to do that close your eyes and ears and live a life of solitude and if you don't want to do that either ...