Aero Precision Direct Blowback Bolt Carrier Group 9mm Luger Nitride Black

The Aero Precision EPC/AR9 Bolt is the core of your EPC build. Machined from 8620 steel and featuring a nitride finish, fracture resistant grade 23 titanium pin, and 4140 steel extractor, the EPC bolt assembly is precision machined from the ground up to meet the extreme demands of blowback AR platform firearms.BOLT FEATURES:Machined from 8620 SteelBlack Nitride FinishBOLT INCLUDES:8620 Steel Bolt Assembly4140 Steel Bolt GuidesGrade 23 Titanium Firing PinFiring Pin Retaining Pin4140 Steel ExtractorHeavy Duty extractor coil pin(all parts are installed)