Take a look at this clip from a very recent AP article. Notice the "primitive guns and curved daggers" reference?
Let's not jump to conclusions and blame the kamis for selling guns and khukuris to the Maoists. My guess would be the Maoists just take them and anything else they might want.
Uncle Bill
CHAUTARA, Nepal (AP) -- As Nepal embarks on the third democratic
election of its modern history, an armed Maoist insurgency is finding
increasingly fertile ground in its mountainous, undeveloped countryside.
Masked rebels with primitive guns, curved daggers and Maoist doctrine
are invading remote Nepalese villages, extorting food from residents,
looting banks and businesses, and seeking recruits among the
disenchanted poor.