The PTG One-Piece Bolt with Handle is a high quality drop in upgrade for any Remington 700 action. Available in either fluted or solid configurations, the PTG One-Piece Bolt is made from chrome moly steel in the white and the handle is threaded for 5/16"-24 bolt knobs. Bolt is cut for an M16 extractor, not included. Notes:Headspace with these replacement bolts needs to be checked by a competent gunsmith to ensure proper fit. The magnum caliber bolts with M16 style extractors may require some fitting to the counter bore. Features 0.75" STD firing pin tip.Current production runs of this bolt require the large/magnum extractor, product #111548. Not for use with the mini extractor.