A Youtube comment (unsuprisingly):

the tavor 21 was made in isreal want was a gun that could conquer there other honeland gun the galil which made up for the he aviness of the fn fal so the tavor 21 would shoot 5,62 caliber bullets it could also be used as a sniper rifle that was bull pup

I think most of this is pretty damn wrong, but let's hand it to the the real firearms experts on this wikia.

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