https://www.22mods4all.com/5-56-223-complete-nitride-bolt-carrier-group/

PRODUCT DESCRIPTION

Features:
  • Magnetic Particle Inspected
  • Shot Peened
  • Fully Assembled 
Platform:
  • AR-15 
Caliber:
  • .223 / 300aac / 5.56 / 350L
Finish:
  • Bolt - Salt Bath Nitride
Material:
  • Bolt - 9310 Steel
  • Carrier - Salt Bath Nitride
Carrier Style:
  • M-16
Gas Key:
  • Stacked
Pressure Test:
  • No
Included:
  • Charging Handle