It happened on May 3rd around 10:00 p.m. on the 6600 block of 12th Street.
Authorities captured surveillance video of two men and one woman entering an apartment building.
One of the suspects knocked on the door and a 55-year-old man opened.
The three assailants allegedly barged their way inside, knocking the victim to the floor.
Police say the female suspect demanded money while one of the men pointed a gun and the other took money from the victim's pockets.
After getting an undisclosed amount of cash, an Xbox gaming system, prescription medication and a cell phone, all three fled the scene.
The first suspect is described as a Black female, 30 years-of-age, 5'2"-5'4" with a light brown complexion, a medium build and dark curly hair. She was last seen wearing a white hooded sweatshirt and dark colored pants.
The second suspect is described as a Black male, 5'2"-5'5", with a medium brown complexion and a bald head. He was last seen wearing a dark colored hooded sweatshirt and dark colored pants.
The third suspect is described as a Black male, 6'0"-6'2", with a medium complexion, a mustache with a scruffy beard and a stocky build. He was last seen wearing a dark colored knit hat, gray hooded sweatshirt, Khaki cargo style pants and black sneakers.
Anyone with information is asked to contact Philadelphia Police at 215.686.TIPS (8477), by texting a tip to PPD TIP (773847) or online via phillypolice.com