Alpha Backup 5.56 Nitride Bolt Assembly
- Includes extractor, gas rings and ejector assembly
- Bolt: 9310 & QPQ nitride/melonite treated
- The QPQ nitride/melonite treatment hardends the surface to 70 RC and reduces friction, adding corrosion resistance inside and out.
- Magnetic particle inspected and laser marked.
- Extractor machined from bar stock.
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