This Nickel Boron M16 / AR-15 BCG complete bolt carrier group features a Nickel Boron EXO coating for enhanced durability, lubricity, and easy cleaning. EXO coating is performed by UCT Coatings. Carrier is made from 8620 steel, bolt is made from 9310 steel and is MPI tested, shot peened, and batch HP tested. The Bolt and Bolt Carrier Assembly comes complete with cam pin, firing pin, and firing pin retainer. This bolt carrier group will work with any mil-spec AR-15. Bolt is marked MPI. All Tom's Tactical brand products include a lifetime warranty.

Features

• Nickel Boron EXO treated for enhanced durability, lubricity, and easy cleaning
• Works with .223, 5.56 and .300blk
  
• Bolt is made from 9310 steel and MPI tested, shot peened, and batch HP tested
  
• Carrier is M16 design, fully shrouded and made from 8620 steel
  
• Firing pin is made from hard chrome
• Gas key is machined from 4140 hardened billet steel
• Hardened D2 steel extractor with spring, insert, and O-ring
• Mil-spec gas rings
• Made in USA
• Lifetime Warranty