I received my Bestill Knight NFPJ Breechplug from Jeff at the end of last week. The machining of the breechplug is excellent which is to be expected from Lehigh Dave. The Primer Pocket is sized perfectly for a Federal 209A Primer. It inserts and removes easily with no sticking. The bushing has a nice tight slip fit. It will be a while before I fit them to my guns as my youngest Son has me helping him with his last Pinewood Derby Car. The race is in four weeks in NYC. I will post how the installation goes when I do it over the Summer.