Why is Heckler & Koch HK416 5.56mm 10.4″ barrel rifle good for training. The Heckler & Koch HK416 with a 10.4″ barrel is considered good for training for several reasons: 1. Compact Size and Maneuverability: 2. Realistic Training: 3. Reliability: 4. Ergonomics and Customization: 5. Effective Training Ammunition: 6. Enhanced Learning Experience: 7. Safety and […]