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What does FSB stand for?

FSB stands for Front Sight Base

This definition appears frequently and is found in the following Acronym Finder categories:

  • Military and Government

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Other Resources:
We have 136 other meanings of FSB in our Acronym Attic

Samples in periodicals archive:

The front sight blade is held in place on the front sight base by an odd shaped screw.
The SIG SAUER front sight base is a press fit and may need to be professionally installed.
It was necessary to wrench the front sight base a bit to the left to make it line up with the rear sight and while this Seemed to have no effect on functioning, the handguards were a bit out of line Disassembly is a bit unusual, but is illustrated in the "User and Maintenance Manuel.
The rear aperture folds down in transport/storage mode and the front sight base serves double duty as the detent latch that holds the folded weapon closed.
The front sight base is firmly attached to the barrel; loosening a knurled screw allows the tubular hood assembly to be removed.