Racist hate: 'Bullet holes' found at Germany's only black MP's office Watch
Karamba Diaby, a lawmaker for the centre-left Social Democratic Party (SPD), posted about the attack on Twitter, saying police and security services were investigating. He attached a photo showing three impact points on a pane of glass.
"One window with my face on it has several bullet holes," he said.
Citing police sources, news site Spiegel Online reported that the projectiles did not penetrate the second pane in the double-glazed window.
Investigators believe the attackers may have used an "airsoft" gun firing small plastic pellets, usually used for wargames similar to paintball.
Foreign minister and party colleague Heiko Maas tweeted that the suspected attack was "unbelievable, disgusting and cowardly".
"We will continue standing by your side for a free, tolerant and diverse democracy," he added.
It would be just as likely a stunt to improve his profile by stacking up victim points.
Can we just leave airsoft guns to airsoft games please and let an MP do their job.