54K views · 193 reactions | Using an M4 rifle, a 27-year-old #gunman opened fire in a #Manhattan building. #shooting | Business Insider | Facebook

70K views · 636 reactions | A 27-year-old man wearing body armor and carrying an M4 assault rifle shot and killed four people, including an off-duty police officer working security in a Midtown Manhattan office building in a shooting rampage, officials said during a press conference Monday evening. A fifth victim was left critically injured in the shooting, officials said. The incident occurred just before 6:30 p.m. in a building located at 345 Park Ave. | ABC7NY | Facebook

Ex-Special Forces Operation and Chief Instructor takes us through the M4 rifle! 📍 Shooting Training Solutions Mark 'Nobby' Knowles uses his 33-years UK Special Forces and Royal Marines experience to deliver firearms training to civilians 🎇 | BFBS Radio