Volquartsen Firearms Competition Bolt 2.0 Black. 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 to have your factory bolt reworked. Case hardened with DLC coating applied - a high performance premium finish that offers many advantages. Increased hardness Low residual stress Increased lubricity Low coefficient of friction Improved wear resistance Requires much less lubrication Specifications for Volquartsen Firearms Competition Bolt 2.0: Manufacturer: Volquartsen Firearms Color: Black Package Contents: Volquartsen Firearms Competition Bolt 2.0 Volquartsen Firearms VF10BLT: Competition Bolt 2.0 Black