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Radical Firearms 5.56mm/300 AAC M16 Bolt Carrier Group


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Radical Firearms 5.56mm/300 AAC M16 Bolt Carrier Group

The Radical Firearms Bolt Carrier Group is compatible for both 5.56 NATO and 300 AAC BLK calibers. The M15 Pattern Bolt comes in 8620 tool steel with a 9310 alloy steel bolt. It has been Shot-Peened for increased surface strength and durability. The Bolt features as well, an extractor booster to ensure reliability and cycling duration rapid or full-auto fire.  The Properly staked gas key also prevents leakage of gas that can result in short stroking and misfeeding. All assembly s are magnetic particle inspected to ensure there are no defects.


  • 8620 Tool Steel Carrier
  • 9310 Alloy Steel Bolt
  • Extractor Booster for increased reliability
  • Melonite Finish for corrosion restistance


  • Bolt Finish: Salt Bath Nitride
  • Bolt Material: 9310 Steel
  • Brand: Radical Firearms
  • Caliber Gauge: 5.56 NATO
  • Carrier Finish: Salt Bath Nitride
  • Carrier Material: 8620 Carpenter Steel
  • Carrier Style: M16 Bolt Carrier
  • High Pressure Tested: Untested
  • Magnetic Particle Insp

Additional information


AR-15 / M4


.223 Remington, .223 Wylde, .300 AAC BLACKOUT, 5.56 NATO


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