Getting knowledge about all kind of firearms and being able to use and understand any firearm

Getting knowledge about all kind of firearms and being able to use and understand any firearm.

Being able to use and understand any firearm, fast. Also when no experience with that model.

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10 different handguns on a table

10 different submachine guns on a table

10 different assualt rifles on a table

5 different sniper rifles

5 different machine guns

5 different anti material rifles

Extra:

And 5 shotguns on a table

Undoing safety, cocking, magazine release, reloading and more

Maybe retractable rear stocks or foldable rear stocks

Getting used to different kinds of sights

Getting used to different kinds of recoil

Troubleshooting

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Extra: 

Field stripping them al