The Heckler & Koch HK416 A5 CO₂ (<3.0 J) is a high-performance airgun designed to replicate the handling and functionality of the iconic HK416 platform. Built with a reinforced metal and polymer structure, this model delivers durability, realistic operation, and full-auto capability tailored for training and recreational shooting.

Firing 4.5 mm (.177) steel BBs, the rifle reaches velocities of up to 133 m/s (436 fps). Its internal system is powered by two 12 g CO₂ capsules, ensuring strong gas efficiency and consistent cycling even during rapid fire. The steel inner barrel contributes to straight shot paths and enhanced repeatability across extended sessions.

With a 36-round magazine and an impressive 370-shot CO₂ capacity, the HK416 A5 offers long, uninterrupted shooting cycles. The ambidextrous fire selector provides safe, semi-auto, and 6-round burst modes, allowing users to choose between precision control or high-speed engagement depending on the scenario. Flip-up sights and a Picatinny quad-rail ensure compatibility with optics, lights, and tactical accessories.

The adjustable 5-step collapsible stock supports a customized shoulder fit and stable handling. At 800 mm in length and 1800 g in weight, the rifle maintains an excellent balance—substantial enough for realism while remaining manageable for active drills.

With its strong blowback feel, responsive trigger, and robust CO₂ system, the HK416 A5 delivers a practical and realistic shooting platform suitable for skill development, tactical-style training, and general airgun use.