Sorry, I didn't have time yesterday and give a better answer.
The entire module gets replaced. The bag, the inflator, the horn contact and the pretty upholstered "pad", complete with the vehicle manufactures logo.
Airbags and seat belts are the true definition of "No serviceable parts inside".
To drive that point home even more, I got a PM from a member here that was concerned about my antics and gave me a warning.
I wanted to pass along this information, just in case anybody decided they wanted to be "cool like Bob" and shoot their airbag.
So here's the PM I received (with colorful expletives removed).
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Airbags all contain sodium azide as a component. About 4½ ounces are in each typical airbag.
Sodium azide is extraordinarily nasty ****. Think "the most toxic **** you've ever encountered".
When an airbag triggers, it consumes 100% of the compound and converts to nitrogen gas, which inflates the airbag. The airbag is triggered by a heat source, or 'primer', if you will.
In your video, I can't tell if the 'bag' got blown off by a slug, or by the sodium azide converting. If the sodium azide is still viable (it's extremely stable without a heat source), it's actually pretty ****ing dangerous.
Sodium azide, when mixed with water, converts to gaseous hydrazoic acid. Hydrazoic acid is a mutagen, which means it mutates your genes.

Lighter than air, it can float on a breeze. Rain is water...
The OSHA Permissible Exposure Limit for this gas is one part per billion. That's one cent in $100,000.00.
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Ok then. So it's not the smartest thing I've ever done. Just don't tell my Mom.
