Description
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.
Full Profile M16 Bolt Carrier Group — Low Mass Nickel Boron
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 0-Ring: Viton, Mil-Spec
Gas Rings (3): Mil-Spec
Finish: NICKEL BORON
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
Finish: NICKEL BORON
Cam Pin:
Material: 4140 Steel
Finish: NICKEL BORON
Firing Pin
Material: 8740 Steel; Centerless ground; Hard Chrome Plated
Weight: 8.5 Ounces
100% USA Made
