BTW - as a state-certified firearm safety instructor, I first noticed students using the 'muzzle toward the ground' carry after Desert Storm, when returning vets, trained on military weaponry, brought the practice with them.

That carry works with a pistol-gripped assault weapon - especially when your next target is likely to be on the ground ahead of you. But in the civilian hunting field it is dangerous, especially around gun dogs, and it took some re-education to get those muzzles up in the air where they belong!

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