theyre out of stock at several vendors Northland Shooters said aprox 1 month i just bought the manson reamer set but im guessing you may all ready have a forster go gauge ? if not the manson were only a few bucks more
If so you can use a sized piece of brass to set headspace so you can get shooting while you wait on a gauge. Matter of fact you can use whatever ammunition you plan on shooting to set your headspace.