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CNA Bolt Assembly (.223/5.56) (Titanium Aluminum Nitride)

  • 10353


This is a complete bolt assembly with a .223/5.56 face, from Canadian National Arms. It includes the Ejector, Extractor and Gas Rings. This is a heavy-duty bolt designed for use in an M16 but works great in an AR-15. The difference is this one is a sexy silver colour due to the Titanium Aluminum Nitride coating.

Titanium Aluminum Nitride (TiAN) is the next evolution of Titanium Nitride (TiN), a gold coating you might have seen. TiAN has a higher temperature resistance and slightly higher hardness and higher hot hardness (i.e. the hardness at high temperatures) than conventional TiN. It is ideally suited for hot conditions because the heat allows the surface layer to continuously reform as it wears.

  • Titanium Aluminum Nitride coating
  • 9310 steel construction
  • Mil-spec dimensions
  • Complete assembly means it's loaded with the extractor, ejector including the required springs and pins to hold it together. 
  • .223/5.56 + more (see below for compatible cartridges) 
  • Weight: 45g

You get:

  1. One complete bolt assembly 

Compatible with: All AR-15/M16 upper variants that use a 223/5.56 case base:

  • .17 Remington
  • .17/223
  • .20 Tactical
  • .20 Practical
  • .20 Vartag
  • .204 Ruger
  • .221 Fireball
  • .222 Remington
  • .222 Remington Magnum
  • .223 Remington (5.56x45mm)
  • .223 Remington Ackley Improved
  • 6x45mm
  • 6mm TCU
  • 6x47mm
  • 6mm Whisper
  • .25x45mm
  • 6.5mm Whisper
  • 7mm Whisper
  • 7mm TCU
  • .300 Whisper (.300/221, .300 Fireball)
  • .338 Whisper
  • and more

    Installation Difficulty:

    Tools required: None

    Installation notes: Drops into any mil-spec bolt carrier