Never seen the barrel bushing referred to as a "bearing" before. It would have been even better if they went into greater detail on the relationship between the seats and disconector. Only thing really missing was the thumb safety.
There is an interesting "game" called World of Guns.
For all intents and purposes its a gun disassembly program that has pretty accurate 3D renderings of weapons and all their associated parts. You can assemble/ disassemble guns, go through test fires, xray views etc. It had a pretty large library of firearms last time a few years ago.
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