noob gunsmith question!!!

are the metal bushing supposed to be protruding outside of the gearbox?.. medyo mahaba kasi nabili ko... is this normal?

does it have to be flush with the gearbox? (sa labas bo to ha)
version 3 po ang gearbox.

any replies would be greatly appreciated.

sometimes the bushing protrudes thru the gearbox but as long as it does not interfere with any of the mechanical parts then thats no problem otherwise you have to grind of the protruding part