Product Description The Aero Precision EPC/AR9 Bolt Carrier Group is the heart of your 9mm EPC build. Precision machined from 8620 steel and treated with a black nitride finish for superior corrosion and wear resistance, this BCG is built to handle the extreme demands of blowback AR platform firearms. Featuring a fracture-resistant Grade 23 titanium firing pin, 4140 steel extractor, and heavy-duty extractor coil pin, every component is engineered for reliable, consistent performance in your AR9 build. Product Highlights Precision machined from 8620 steel for exceptional strength and long-lasting durability Black nitride finish delivers outstanding corrosion and wear resistance under hard use Fracture-resistant Grade 23 titanium firing pin ensures reliable ignition cycle after cycle 4140 steel extractor and bolt guides provide consistent extraction and smooth cycling Purpose-built for 9mm blowback AR9/EPC platform firearms for a true drop-in fit Specs Brand: Aero Precision MPN: APRH200083C UPC: 840014621996 Caliber: 9mm Finish: Black Nitride Bolt Material: 8620 Steel Bolt Assembly: 8620 Steel Bolt Guides: 4140 Steel Firing Pin: Grade 23 Titanium (Fracture Resistant) Extractor: 4140 Steel Extractor Pin: Heavy-Duty Coil Pin Compatible Platform: AR9 / EPC Blowback Disclaimer: We strive to provide accurate and up-to-date product descriptions, specifications, and images; however, errors or omissions may occasionally occur. We are not responsible for any inaccuracies or discrepancies in the content provided. If you notice anything incorrect or unclear, please contact us so we can correct it. When in doubt, we recommend verifying details directly with the product&';s manufacturer.