Maybe not 4% that's a little too extreme but he could get close maybe like 6-8%
at his height and hopefull knowledge yes.. maybe.
but,
those last 4-5% of PURE BODY FAT at an EXTREMELY MUSCULARISED physique will make for an extremely eye pleasing physique that no one can touch provided that the musculature (lbm) is there and that the high dosages of drugs are there to provide sarcoplasmic pump and water inside the muscle.
a tip. get to 5-6% body fat take 500mg anadrol before sleeping 4g potassium, wake up.. you wont belive the seperation in your quadriceps, the way you flex them makes them POP out of the skin and they will extremely defined as all your musculature will be.