SoCal made, death dealing goodness...
I always get a lot of questions as to my favorite sniper rifle, or which I liked to carry the most while active. It is and always will be the "recce rifle", or "sniper M4" as we called it, but known now as the Mk 12. My Sniper School and BUD/s classmate Monty LeClair owns and operates Centurion. He's still well in the know, and updates his products accordingly.
Centurion Arms will make one as issued by Crane. Some of us remember the early versions built in house at each Team, with the round PRI foregrip, but the modern versions are much more condusive to accessories with the KAC rail on it.
Combine this setup with the issued Nightforce, and some 77 gr. Black Hills, or 70 gr. Barnes Triple Shock, and there's nothing left but proper application of the fundamentals.