Chris Brown gets armed guards at his house.

Following the robbery at his home last week, Chris Brown is upping his security. According to TMZ, he has hired armed guards who are prepared to shoot if necessary

Sources close to Chris tell TMZ ... he will soon have 24 hour security at his home ... with one guard inside and another in a vehicle outside. We're told the guards have their marching orders ... open fire if necessary. According to sources, Chris has taken advice from professionals in his life - as well as his mother - and agreed to significantly limit the number of people he invites to his home.

Chris & the LAPD believe some of his friends were in on the break-in earlier this month.