A set of twins who were allegedly hustling pot out of their Brooklyn pad were shot, one fatally, in a drug-deal gone wrong Tuesday night, police sources said.

Two men were caught on video surveillance believed to be armed with guns as they entered the Gravesend apartment on Stillwell Avenue near West 13th Street around 11:15 p.m., cops said.

Galvin Becerra, 26, suffered a single gunshot wound to the chest and was pronounced dead at Lutheran Hospital, authorities said.

His twin, whose name has not been released, was shot multiple times in the chest and he’s clinging to life at Coney Island Hospital in critical condition, police said.

The culprits are believed to be in their 20s, both with slim builds. One of the men had dreadlocks.