![CORE® Nickel Boron Bolt Assembly CORE® Nickel Boron Bolt Assembly](https://cdn11.bigcommerce.com/s-xp7w79u67g/images/stencil/300x300/products/1090/2843/IMG_20240816_132652229__21038.1723830617.jpg?c=1)
SPECIFICATIONS:
- Material: 8620 Steel Type: M16 Full Auto (Preferred for most AR-15 builds)
- Grade 8 Gas Key Screws Coating: Nickel Boron Bolt
- Specifications Bolt Material: 9310 Steel | Shot Peened
- Extractor Material: 4140 Steel
- Caliber: 223 REM /5.56 NATO/ 300 Blackout
- Mil-Spec O-Ring
- Mil-Spec Gas Rings (3)
- Cam Pin Material: 8620 Steel
- Firing Pin Material: 416 Stainless Steel
- Other: MPI Inspected
- Lifetime Warranty: Azimuth BCGs carry a lifetime, no questions asked, warranty.