All my Customs are built on a Remington 700 action. All but one sport McMillan stocks=#450.00 Barrels will range anywhere from 275.00-500.00. I use Broughton,Hart and Shilen barrels. Trigger I would leave stock, just have it tuned. Where are you going to get the gun built? Find a competent smith you can sit down with and discuss what you want or would like. My last build I went to Academy and bought a new Remmy SPS 22-250 and took it straight to my smith. Shilen barrel and metal work cost me 500.00 Bought a laminated stock and had trigger job done. Total cost including scope,new gun and all work,,,,,$1200 and is now a 6BR.