Enhance your AR-15's reliability with the TacFire 5.56 NATO Bolt Carrier Group QPQ Nitride BCG AR15. Engineered to withstand the rigors of full-auto operation, this premium BCG is manufactured in the USA using advanced materials and techniques.Featuring a corrosion-resistant QPQ nitride treatment, the TacFire BCG is precision-machined from 9310 heat-treated steel, ensuring durability and performance. Ideal for both tactical and competitive shooting, it combines strength with functionality.8620 Steel Carrier9310 Steel Bolt HPT/MPIQPQ Nitride TreatedMagnetic Particle InspectedShot PeenedSerrated for use with Forward AssistNitride Treated Gas Key and ExtractorStaked Gas KeyOptimize your shooting experience with an exceptional BCG built for performance.