Adjustable gas blocks?

[2A2Dend]

I went through my spare parts and found a new Troy low-pro .750 gas block. At first, I checked it off my need-to-buy list for my AR10 build. Then I went for a bit of reading about adjustable gas blocks, and their applied use. Basically a regulated valve.

Without buying something for the name engraved into it, what are the benefits from one manufacturers adj-gas-block to another? Tool/no-tool adjust will come into play, as the GB will be buried under the handguard and not be accessible except from the front.

I may have just made the reason for my post redundant

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