I ordered my .30 bronze 700mm from Ken Hicks at SPAW, and here's why. I could have bought from a number of other well-respected distributors for a small down payment, but did 100% prepay (his rules) with Ken. I wanted the slug power kit INSTALLED in my M3 before delivery. Most other distributors would SELL me the kit, but I would have had to install it myself. I don't mind installing the pin probe myself, but I am not taking a new gun apart to install the more internal parts. I also had Ken replace the first regulator FX gauge with a WIKA, and install a Superior heavy liner. Ken does not charge for the installation, IF you do it at the time of ordering the gun, so why would I buy/make special tools and risk not doing it correctly? I may have to learn about the gun at some point in the future, but not on the day a get it. Just my .02