Large quantities of arms continue to flow into the Democratic Republic of Congo despite a peace deal and a UN arms embargo, say human rights groups.
The flow of weapons into eastern DR Congo has not stopped
Amnesty International says companies from the UK, Israel, South Africa, the US, Balkans and eastern Europe provide weapons to militias in east DR Congo.
The report also documents arms sales to groups in neighbours Rwanda and Uganda.
Amnesty called on the United Nations to strengthen its arms embargo and ensure round-the-clock monitoring of airports.
"If the international community, the UN, and neighbouring states fail to halt this proliferation, the fragile peace process will collapse with disastrous consequences for human rights," said Kolawole Olaniyan, director of Amnesty's Africa programme.
DR Congo's five-year civil war, which involved six countries, was declared over in 2003.
But Rwanda and neighbouring Uganda are accused of continuing to fuel unrest in eastern DR Congo, smuggling in arms and plundering the region's resources.