When I built my Savage .308 I talked to Kevin Rayhill at Stockade gun stocks. He had everything. Recoil lug, tactical bolt handle, bolt head, magazine box, everything. Best of all I had it in four days. He said If I ever needed anything call. Even on Sunday afternoon he said. Beware though, He will talk your ear off so have fifteen-twenty minutes if you call.
Stockade Gun Stocks - specializing in custom rifles