... the long term goals is to assimilated all these Tibetan and Uighur into the Greater Chinese Collective; just like how we mojo all these dirty Manchurian and decimated their culture and their race.
Beside, few trouble maker inside Tibet and Xinjiang does not pose an impending danger to China. Why help few trouble maker to stir up ethic division?
If you distributed these firearms weapons into the greater Han population, you can't take it back and it will be weapons used for any future Chinese civil wars.
If you given arms and weapons to the Hans population; sooner then later, other ethic groups would also demanding weapons and firearms to protect their own groups.
Very soon, you are going to have regional division with armed warlords and a fractured China like that during KMT time leading to a general break down of the nation.
It is far better, using the carrot and stick to slowly aborts these Tibetan and Uighur into the greater Chinese Collective.
You sure don't wanting general distribution of weapons to the broad populations. This is just suicidal for the CCP and the China.