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CNA Gas Key (Nickel Teflon coated) for #10 screws

CNA Gas Key (Nickel Teflon coated) for #10 screws

  • 2327


The Canadian National Arms Gas Key is an important little guy. It catches the gas coming through the Gas Tube and transmits the gas force into the rest of the Bolt Carrier Group to cycle your gun. The gas key can be damaged if you drop your entire Bolt Carrier Group on the ground, or if the Gas Tube is too far back.

Note this is the special Canadian National Arms version with slightly larger holes drilled for the larger #10-32 screws. (Might be able to substitute this for a regular #8 screw type key but we haven't tried that.)

Nickel Teflon has a number of advantages over common phospate or nitride coatings. The low friction means less wear, so it lasts longer. And you can run it without lube, which has the side benefit that it needs less frequent cleanings because there is no oil to get baked and foul things up.

  • Cast steel
  • Ready to drop in and go
  • Mil-spec
  • Sexy Silver colour
  • Nickel Teflon finish for easier cleaning/ possibly less shit sticking to it in the first place
  • Convenient ledge for staking
  • Weight: 20g

You get:

  1. One gas key

Compatible with:

  • All mil-spec gas tubes
  • All mil-spec bolt carriers that use #10 screws
  • All mil-spec gas key screws

Installation Difficulty:

Tools required: Hex key for the screws and a staking tool to lock it in place

Installation notes: Typically these are staked into place after the screws are torqued to about 50 INCH pounds. There is a lot of heat and vibration about to go through this little guy so help make sure he stays firmly secured in place. Removal of the key will damage the staking. For the small price of an essential part, I never reuse a gas key once removed. A fresh key will have virgin staking material for secure fastening. You could aslo use Permatex #3 gasket maker or thread locker to seal the bottom for a perfect gas seal.



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