Jane’s Intelligence Review, via Burmese (Myanmar) news website Irrawaddy, reports that the United Wa State Army (UWSA) rebels in northern Burma have begun manufacturing AK-47s and ammunition for themselves and to sell to their allies in the region.

Burma (From Wikipedia)
Like the Taliban their arms revenue supplements their drug income. Previously they had been purchasing arms from China and then reselling to other rebel groups.
An interesting although unsurprising article about gun law in Burma (Myanmar):
A 1951 law bans possession of automatic weapons, grenades, and explosives with the intent to commit high treason. A rather narrowly-tailored law, at first glance.
However, the law states that the President can by decree add “any other arms or ammunition” to the banned list. And any person with a banned weapon is presumed guilty of intending to commit high treason, and required to prove his innocence:
Same old story. Those without arms are oppressed. Continue reading here.