The Volquartsen SF-1 17 HMR rifle features a McMillian thumbhole stock, stainless barrel with a fluted pattern, match bore and chamber tolerances, CNC-machined stainless steel receiver, TG2000 trigger guard, integral picatinny rail, and a CNC-machined bolt with a titanium round firing pin and tuned exactor. Volquartsen SF-1 17 HMR McMillan Thumbhole