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HK HK433

Assault rifle

HK433

The HK433 assault rifle was aimed to replace the G36 in service with the German Army

 
 
Country of origin Germany
Entered service ?
Caliber 5.56 x 45 mm
Weight (unloaded) 3.5 kg
Length 989 mm
Length (with folded stock) 705 mm
Barrel length 421 mm
Muzzle velocity ~ 925 m/s
Cyclic rate of fire 700 rpm
Practical rate of fire 40 - 100 rpm
Magazine capacity 30 rounds
Sighting range ?
Range of effective fire ~ 500 m

 

   The HK433 is a modular assault rifle, developed by Heckler & Koch (HK) company. This weapon was first publicly revealed in 2017. The HK433 was aimed to replace the G36, which is used as a standard-issue infantry rifle in service with Germany. Even though the G36 is currently one of the best assault rifles in the world, it is in service with Germany for more than 20 years, hence it is considered out-dated. So the German Army is looking for a new weapon. The HK433 will compete against RS-556 assault rifle from Rheinmetall-Steyr, and several other designs. The HK433 might also have a significant export potential.

   The HK433 is a gas operated, selective fire weapon. It has some external features of the HK416, however it is not based on the HK416 or the M16. Internally it has some design features of the G36. The HK433 has a manual gas regulator. This weapon is chambered for a standard NATO 5.56x45 mm ammunition. Design of this assault rifle might be adopted for other calibers, such as 7.62x39 mm and 7.62x51 mm.

   This assault rifle has a quick detachable barrel. Various barrel lengths are available. These include 280 mm (11"), 318 mm (12.5"), 368 mm (14.5"), 421 mm (16.5"), 480 mm (18.9"), and 503 mm (20") barrels. The baseline version comes with a 421 mm (16.5") barrel. So the HK433 can be easily converted by the shooter from compact assault rifle to carbine, and designated marksmen rifle. Furthermore such modularity reduces production price and makes the weapon more appealing for various customers.

   An ambidextrous fire mode selector is located above the pistol grip. It has three positions for "safe", "semi-auto", and "full-auto". Pistol grip is similar to that of the HK416.

   A cocking handle is located on the foregrip. The folding cocking handle is non reciprocating. It can be easily installed by the shooter on either side of the weapon. The handle can be locked in order to be used as bolt closure assist.

   Spent cases are ejected to the right side only, however there is a deflector, which propels spent cases away from the left-handed shooters.

   This weapon is proposed with an optional integral electronic shot counter. The shot counter is maintenance free. Furthermore it requires no energy supply and is battery free. Data from the counter is transmitted wirelessly using RFID technology and is useful for the maintenance of the weapon.

   This assault rifle is fed from 30-round capacity magazines. It uses standard NATO (M16-type) magazines. The HK433 is proposed with two alternative lower receivers. One of them has an M16-style magazine release button, while the other has a G36-style magazine release lever.

   The HK433 has a side-folding buttstock. The stock can be adjusted for length. There is also and adjustable cheek pad. The trigger remains freely accessible even when the buttstock is folded. So in case of emergency the shooter can fire the weapon with the buttstock folded.

   The HK433 has a full-length Picatinny type scope rail. It is intended to be used with various scopes. This weapon comes as standard with flip-up iron sights, though these are mainly intended for emergency use. Range of effective fire is around 500 meters.

   There is a Picatinny-type accessory rail on the bottom of the foregrip. Sides of the foregrip have a slots with provision to mount additional accessory rails. The HK433 assault rifle can mount a silencer, HK269 or GLM 40 mm underbarrel grenade launcher, or various other tactical accessories. A bayonet holder is optional.

 

 
HK433

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HK433

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HK433

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HK433

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HK433

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