Wilson Combat AR Rifle Bolt, 5.56 NATO

Our complete bolt assembly is precision machined from Carpenter No. 158 steel, shot-peened for increased strength and a includes a tool steel extractor and ejector, appropriate extractor spring, and is HPT (High Pressure Tested) and MPI (Magnetic Particle Inspected).; The extractor is 4140 gun quality, annealed, cold drawn steel per the Mil-Spec. The bolt is the heart of any rifle and these will serve you well as a backup part or the beginning of a new build; Parkerized finish; Mil spec small parts ensure a long service life; Machined ejector and extractor per mil specs; Drop in fit for any quality 5.56 case head based AR rifle (.223/5.56 NATO, .300 Blackout, .204 Ruger, or 7.62X40 WT); Specifications for Wilson Combat AR Rifle Bolt, 5.56 NATO: Manufacturer: Wilson Combat Finish: Parkerized Fabric/Material: Steel Cartridge: 5.56x45mm NATO Package Contents: Wilson Combat AR Rifle Bolt, 5.56 NATO