Classic Retro Chrome M16 Bolt Carrier Groups match the finish of the bolt found on the earliest AR-15 & M16 rifles.
  • Durable, matte silver chrome
  • Magnetic-particle inspected, 9310 bolt
  • M16 8620 steel carrier (works with standard AR-15 rifles)
  • Extractor includes spring and rubber insert
  • Includes torqued and staked gas key
  • Functions with any cartridge based on the 5.56 NATO cartridge case

Direct Link: https://3crtactical.com/product/brownells-retro-m16-ar15-chrome-bolt-carrier-group-no-serrations/