The Black Rain Ordnance Bolt Carrier Group for Left Handed AR-15 rifles is a great reliability upgrade for your AR-15. The Nickel Boron Plating resists corrosion and has its own lubricity to help reduce wear and will operate at a lower temperature than a standard bolt carrier group.
Caliber: .223/5.56mm (LEFT HAND)
*NOTE: This is for Left Handed AR-15s only. It will not work in a standard AR-15.*