F/S: Colt AR-15 Bolt, 5.56/.223/.300 BO bolt face. It came in a LMT BCG I recently purchased on here but I already had a bolt. Has 90 rounds on it. Gas rings and extractor spring are like new. Extractor spring looks to be either a Sprinco or BCM product. $75 shipped. PayPal f&f or you pay the fees, Venmo or Zelle.