Samantha Patenaude, 19, and 23-year-old Jakob Mosterd were both taken into custody on Wednesday.
Two others — Dylan Majorel, 31, and 28-year-old Armand Belisle — were arrested earlier in the week.
The four have been charged with robbery, break and enter, and use of a firearm in the commission of an offence.
Over the weekend, a 25-year-old man opened his apartment door to three suspects who pushed their way in, demanding the victim turn over cash and guns from a safe inside.
The man complied, then jumped from the second story balcony and suffered non-life threatening injuries.
In May, three masked men broke into the home of an elderly Abbotsford couple, tied them up and stole nine firearms and a large amount of ammunition.
There is no word if the two cases are connected.
Also on HuffPost