Well I would do some more shopping around as by the time you add bolt , charging handle and muzzle brake price is over 500 . look at this one and there are others out there.
https://shoretactical.com/product/517/ , brass from arms and ally formerly monmouth was cheapest I could find , got a aero precision upper for 458 and a toolcraft bolt just before the recent panic and the increase in prices , that 50 beowolf does sound enticing , but I do not know if I want to go any deeper down this rabbit hole . And another note muzzle brakes vary in price for these threads and caliber , I have 5x24 and 5x32 and am waiting on 3 brakes from fritz-tactical . I keep coming back to this thread so keep up the posts .