Volquartsen 10/22 BoltIncludes Custom Rod and Spring with Buffer Complete CNC-Machined Bolt features our hardened and tuned extractor for positive, consistent extraction. It also includes our round titanium firing pin. This round design eliminates the unnecessary movement found on most 10/22 firing pins. The CNC-machining process allows us to hold the head spacing to exact dimensions eliminating the need for having your factory bolt reworked. Bolt is case hardened and black nitride finished for improved lubricity during cycling.