I have been buying some tools for general maintanance but some things like the vice clamp im trying to avoid as they are something I would probably use once maybe twice. When changing a FS will it screw up the barrel to hold the barrel by hand and wrench it off? If so I guess I better buy a vice and the clamp lol. Also is the ejector changing tool needed or can you do it by hand. Since im a dealer its easier and cheaper for me to buy a complete upper than to put one together or I would probaly start building.
Thanks

