Repair of S&W M&P15A screw broke on my S&W M&P 15 sport II gas key and after being told it would be months before I would receive a warranty replacement I decided to repair my existing bolt carrier. The fit of the gas key was perfect and worked great at the range today!
Well madeI haven't use these, but good to have essentials around.
Another nice piece from cnaNice finish and good quality. Just don't forget the #10 screws.
CNA Gas Key (Phosphate) for #10 screws
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. This is why you don't want to have an improperly-secured Gas Block.
This is the special Canadian National Arms version optimized for the larger 10-32 screws.
- Cast metal construction
- Ready to drop in and go
- Convenient ledge for staking
- Made in an ISO 9001:2008 factory
- Weight: 20g
- One gas key
- All mil-spec gas tubes
- All mil-spec bolt carriers that use #10 screws
- All mil-spec gas key screws
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.