Heckler & Koch HK433
The Heckler & Koch HK433 is a modular assault rifle chambered for 5.56×45mm which combines features of the G36 and the HK416 families of assault rifles.
| Heckler & Koch HK433 | |
|---|---|
A HK433 | |
| Type | Assault rifle Carbine |
| Place of origin | Germany |
| Production history | |
| Designer | Heckler & Koch |
| Designed | 2017 |
| Specifications | |
| Mass | 3.25 kg (7.2 lb) (11") 3.40 kg (7.5 lb) (14.5") 3.50 kg (7.7 lb) (16.5") |
| Length | 577–843 mm (22.7–33.2 in) (11") 634–931 mm (25.0–36.7 in) (14.5") 703–971 mm (27.7–38.2 in) (16.5") |
| Barrel length | 280 mm (11 in) 368 mm (14.5 in) 419 mm (16.5 in) |
| Width | 81 mm (3.2 in) |
| Height | 195 mm (7.7 in) |
| Cartridge | 5.56×45mm NATO |
| Action | Short-stroke piston, rotating bolt |
| Rate of fire | 850 rounds/min |
| Muzzle velocity | 800 m/s (2,600 ft/s) (11" barrel) 850 m/s (2,800 ft/s) (14.5" barrel) 875 m/s (2,870 ft/s) (16.5" barrel) |
| Effective firing range | 500 m (550 yd) |
| Feed system | 30-round detachable STANAG magazine |
| Sights | Iron sights and Picatinny rails for various optics |
The HK433 was designed by Heckler & Koch to be familiar to operators with experience using the Heckler & Koch G36 and HK416 platforms. All controls are ambidextrous, and major components are modular, allowing for rifles to be configured in the field as needed.
The Heckler & Koch HK437 chambered in .300 Blackout and features a 7- and 9- inch barrel was originally announced along with the HK433 in 2017. In late 2022, the Ministry of the Interior, Municipal Affairs, Housing and Sports of the State of Schleswig-Holstein recently commissioned Heckler & Koch Germany to manufacture and supply the HK437.