The assault rifles, delivered with pomp at a ceremony on the tarmac at Kabul's military airport, will be directly transferred to security forces, said President Ashraf Ghani's national security adviser Hanif Atmar.
"We are trying to continue our efforts for peace, but in the meantime our nation should have the ability to defend itself," Atmar said.
He said "international terrorism" in Afghanistan was a threat not only to the country and the region, but also to "our friends in Russia".
Kabul is trying to resume a dialogue with the militants, and after talks with the US, China and Pakistan yesterday said it expects to relaunch the stalled peace process by early March.
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Russia is not part of the quartet. In a recent interview with state news agency Ria Novosti, Zamir Kabulov, the Kremlin's special representative to Afghanistan, described Washington's efforts to restore peace as "futile".
At today's ceremony Russia's ambassador in Kabul Alexander Mantitski said cooperation between his country, NATO and the United States in Afghanistan ended in April 2014 "at the initiative of the West".
However the diplomat said Moscow would continue to cooperate directly with its Afghan partner.
Russia remains concerned about the growing influence of Islamic State in the east of the country, where the group counts fighters from Uzbekistan and Tajikistan - two former Soviet republics bordering Afghanistan - in its ranks.