Gas block mounted front sight?
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Originally Posted by
jmk
DON'T take this advice.
the ADVANTAGE of gas block sights is that they move with the barrel as it flexes from heat, pressure, whatever...
your rifle will be MORE consistently accurate with gb sight than forearm sight.
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[Citation required]
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since you're just looking for a BUIS, find something you think is cool and get it.
There's no worse criteria than what one "thinks is cool."
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(but...advice from a (real) SEAL: leave your buis UP at all times.)
Why buy a flip up sight if you plan to always leave it up? I do agree on keeping BUIS deployed always, but prefer fixed sights to reduce complexity and eliminate the risk of them being accidentally folded down.