Join the NRA. Take the 8+ hour $100ish course and pass. You are then technically the lowest level of firearms instructor which may be enough to qualify you for a glock armorer course.
I'm taking the glock course in May. Signed up 6 months ago. They allowed me because I am a gunsmith and range officer. Basically they just want to know you have formal gun training for safety.
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No Longer affiliated with Old Mill Gun Shop
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