If you send your gun to me i will find parts for your gun and/or modify your gun for you. (example) if you send me a compact and a list of parts and the money you wish to spend i will find the cheapest parts availiable and trick out your gun, or i will find the specific parts you request.
If you send me money and a gun and tell me to trick it out to the best of my ability with the allowed amount of money i will take a look at your gun (fire it over a chrono, check for leaks etc.) then put on the nessesary parts for the best performance.
I can do almost anything and find everything so leave me an email with your request.