Welcome to the forum. You didn't state your location but you may find silencercentral.com useful as well. They used to be Dakota Silencer and are located in Sioux Falls, SD.
They have some very nice products and also offer barrel threading and travel throughout many states. They also handle all the NFA paperwork right at the gun shows, 15 minutes or so. Very nice products. As Phil suggested, do some searching. As a retired toolmaker I chose titanium from Mack Bros stack design. More expensive than AL but they are a fantastic design and I like durability. Mine makes my .223 sound like a rimfire rifle.
That's not to say no one else has the same stuff. Good Luck searching.