Police are looking for a pair of men who allegedly forced their way inside an 87-year-old’s Bronx apartment, then pistol-whipped and robbed him, leaving him bloodied and bruised — but not too shaken to share his story.

Two thieves pretending to be deliverymen forced their way into an 88-year-old man’s Bronx apartment, where they pistol-whipped him and tied him up, police said Thursday.

After a knock at the door, the suspects pushed 87-year-old William Cortes into his home, pistol-whipped him, and tied him to his bed.

Two brazen bandits who posed as deliverymen before pistol-whipping, tying up and robbing an 88-year-old man inside his Bronx apartment last month are still on the lam, cops said Thursday. The senior was inside his apartment within NYCHA’s Mitchel Houses on Willis Avenue in Mott Haven around 7:20 p.