The paramilitary force raided a home of party activist in Korangi on a tip-off. The personnel also razed a wall of his washroom and recovered weapons concealed behind it.
According to Rangers spokesperson, at least 15 short machine guns and one LMG.
He said two target killers were also hiding at his home who were also apprehended and Rangers took them along for investigation.
He said the weapons had to be used for creating unrest in Karachi.