How to take off AR?

My bistool's AR is stuck on the base for some reason i took off the bitbeast and ive tried pulling it off and turning it, it won't work, any ideas? btw when I spin the AR it seems to be attached to the base gear
Questions regarding Plastics:
http://worldbeyblade.org/Thread-Plastics...cs-not-HMS

Questions regarding HMS:
http://worldbeyblade.org/Thread-HMS-Q-A-...ns-go-here

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