AR15 AR9
Bolt Carrier Group (BCG)
Bolt carrier group (BCG) made from AISI 8620 steel, available standard or with Nickel Boron, Phosphate or Black Nitride coating.
COLORS AND CATALOG CODES
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Bolt carrier group (BCG) made from AISI 8620 steel, available standard or with Nickel Boron, Phosphate or Black Nitride coating.
Technical Details
- Material: AISI 8620 steel
- Hardness: 38–42 HRC
- Coating options: Nickel Boron (G55604001), Phosphate (G55604002), Black Nitride (G55604003)
- Caliber: 5.56 / .223
Ni-Boron Coating
Electroless nickel-boron (Ni-Boron) coating provides high hardness, excellent corrosion and wear resistance and protection against extreme heat. It carries no risk of hydrogen embrittlement and is an environmentally friendly alternative to hard chrome, so coated parts last longer and need less maintenance.
Options and Part Codes
- Standard — 55604001
- Nickel Boron Coating — G55604001
- Phosphate Coating — G55604002
- Black Nitride Coating — G55604003
Technical Specifications
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