What?! that was awsome it owned all and actually was so easy to use, it did make sense because like it says it got overcharged and reverses the disintergrater giving it power isnstead.
I speant the entire last part of the game with this gun because its so easy its also hillarious picking up the enemies with it and chucking bodies to make more dead bodies lol and ripping parts of the wall to chuck too.
The fact that its the last part of the game, it was there on purpose so you could have fun at the end and made it more ‘epic’ as theres no need for the other weapons.
EDIT: it was also vital for the puzzles for reaching those long distances in the citadel which the normal gravity gun couldnt handle and so had a big use or you wouldnt ahve been able to complete the game