Gucci Mane was arrested this morning for allegedly cussing out a couple of cops in Atlanta while in possession of weed and a gun … TMZ has learned. Gucci Mane — real name Radric Davis — was taken into custody at 12:05 am this morning after one of his friends complained to cops about his erratic behavior. According to the report — the friend waved down police to help out … but when they approached Gucci he began “cursing and threatening them.” We’re told he was immediately taken into custody and police found a small amount of marijuana on the 33-year old rapper … as well as a handgun. GM was booked for carrying a concealed weapon, disorderly conduct and marijuana possession … then taken to a nearby hospital as a precaution. We’re told he’s still at the hospital.