Fostech Complete Bolt Carrier Group Black

This is a standard full-auto M16 cut bolt carrier group. It is designed to function with the Echo AR-II and the Echo Sport.

Bolt Assembly

• Bolt: Shot Peened; Magnetic Particle Inspected and Marked
• Bolt Material: 9310 Alloy Steel
• Compatibility: .223 / 556 / 300BLK
• Extractor: Shot Peened Hardened Tool Steel
• Extractor O-Ring: Viton Mil-Spec
• Gas Rings (3): Mil-Spec
• Finish: BLACK NITRIDE

Bolt Carrier

• Material: 8620 Steel
• Design: Heavy Profile M16 Style
• (Preferred for most AR-15 Builds)
• Gas Key Screws: Grade 8; Properly Torqued and Staked to Mil-Spec
• Gas Key Material: 4130 Steel
• Finish: BLACK NITRIDE

Cam Pin

• Material: 4140 Steel
• Finish: BLACK NITRIDE

Firing Pin

• Material: 8740 Steel; Centerless Ground; Hard Chrome Plated
• Weight: 11.6 Ounces

100% USA Made

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Whether you’re purchasing Fostech Complete Bolt Carrier Group Black by FosTech Outdoors or shopping for your next firearm, our team is here to provide expert service before and after the sale.