I would if I had one and its legal wherever I decided to hunt but since I'm not familiar with hunting laws in each and every place where hunting is allowed I cannot answer that question The AR-15 shoots the .223 Remington (a sporting round) and .223 Rem is often used for target shooting, varmint hunting, and occasionally deer hunting. The .223 Remington is actually LESS powerful than most deer hunting cartridges. I'm also fairly certain there are certain models of .223 hunting rifles that accept the same mags used in AR's